Warning sign

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"Warning Sign" redirects here. For other uses, see Warning Sign (disambiguation).

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For a sign on a vehicle or building relating to it or its contents, see placard.
File:-01 Museo Nazionale dell'Automobile di Torino segnali stradali.jpg
Exhibit mostly of warning signs (with some regulatory signs like Do Not Enter), Turin Automobile Museum

A traffic warning sign is a type of traffic sign that indicates a hazard ahead on the road that may not be readily apparent to a driver.[1]

In most countries, they usually take the shape of an equilateral triangle with a white background and a thick red border. However, both the color of the background and the color and thickness of the border varies from country to country.

In the People's Republic of China (except for Macau and Hong Kong), warning signs appear with a black border and a yellow background. In Sweden, Serbia, Bosnia and Herzegovina, Greece, Finland, Iceland, the Republic of Macedonia and Poland, they have a red border with an amber background. The polar bear warning sign in Svalbard recently changed from displaying a black bear on white background to a white bear on black background (both signs are triangular with a red border). Some countries (like France, Norway, Spain) that normally use a white background have adopted an orange or amber background for road work or construction signs.

Warning signs in some countries have a diamond shape in place of the standard triangular shape. In the United States, Canada, Mexico, Thailand, Australia, Japan, Indonesia, Malaysia, New Zealand, most of South America, and also Ireland (diverging from the standards of the rest of Europe) use warning signs are black on a yellow background and usually diamond-shaped, while temporary signs (which are typically construction signs) are black on an orange background. Some other countries also use these standards for some signage.

The warning signs usually contain a symbol. In Europe they are based on the UNECE Vienna Convention on Road Signs and Signals. In the United States they are based on the MUTCD standard and often contain text only.

History

17th-century sign along Salvador Street in Alfama, Lisbon says "Year of 1686. His Majesty commands all coaches, seges and litters coming from Salvador's entrance to back up to the same part"
File:Fitche's Bridge, warning sign - geograph.org.uk - 1413324.jpg
British specimen, c. 1860s.
Early Czech warning signs, c. mid-1930s. The blue signs were later supplanted with red-white-black signs.
File:Redundant sign - geograph.org.uk - 467503.jpg
Pre-standardization British School Zone with metal-cutout generic Warning symbol embellished with red glass reflector-spheres.

Some of the first roadside signs —ancient milestones— merely gave distance measures. Hazard warnings were rare though occasional specimens appeared, such as the specific warning about horse-drawn vehicles backing up which was carved in stone in Lisbon's Alfama neighborhood in 1686. The early signs did not have high-contrast lettering and their messages might have been easily overlooked. Signs were written in the local language (example); symbolic signs, though long used on certain tradesmen's signs (like the pawnbrokers' tri-ball symbol) were to be used for traffic only much later in history.

Complex signage systems emerged with the appearance of motorcars. In 1908 the automobile association in West London erected some warning signs. In 1909, nine European governments agreed on the use of four pictorial symbols, indicating bump, curve, intersection, and railroad crossing. The intensive work on international road signs that took place between 1926 and 1949 eventually led to the development of the European road sign system.

As the 20th century progressed and also as traffic volume and vehicle speeds increased, sign-visibility and nighttime use capability gained significance. Earlier flat painted signs gave way to signs with embossed letters. Circa 1940-50 in countries with many vehicles, wording might be spelled out with so-called "button copy" —letters dotted with reflective glass spheres for night visibility. Button copy signs with plastic pips rather than glass appeared in the 1970s. Flat metal signs reappeared in the 1980s with the widespread use of surfaces covered with retroflective sheeting materials like Scotchlite.

In Europe, the 1968 Vienna Convention on Road Signs and Signals (which became effective in 1978) tried, among other things, to standardize important signs. After the fall of the Iron Curtain and greater ease of country-to-country driving in the Eurozone, European countries moved toward lessening the regional differences in warning signs.

In modern regulations, U.S. warning signs are classified as Series W signs, such as: W1 Series (curves and turns), W2 Series (intersections), W22 Series (blasting), et cetera, ending with the W25 Series (concerning extended green traffic lights). Some U.S. warning signs are without category while others like the warning stripes at tunnel portals or plain red End of Roadway signs are classified as Object Markers (OM Series). In the U.S., Stop and speed limit signs fall under the R Series (Regulatory). Modern U.S. signs are widely standardized; unless they are antique holdovers from an earlier era, oddities like a yellow Stop sign or a red Slippery When Wet sign would typically appear only on private property —perhaps at a hospital campus or in a shopping mall parking lot.

Street sign theft by pranksters, souvenir hunters, and scrappers has become problematic: removal of warning signs can contribute to traffic collisions and also costs municipalities money to replace lost signs. Some authorities affix theft-deterrence stickers to the back sides of their signs. Some jurisdictions have criminalized unauthorized possession of road signs or have outlawed their resale to scrap metal dealers. In come cases, thieves whose sign-removal lead to road fatalities have been charged with manslaughter.[2][3][4] Artistically inclined vandals sometimes paint additional details onto warning signs: a beer bottle, a handgun, or a boom box added to the outstretched hand of the Pedestrian Crossing person, for example.

Modern warning sign shapes and colors

Warning signs can indicate any potential hazard, obstacle or condition requiring special attention. Some of the most common warning signs are the following.

  • Most common designs
  • Diamond warning sign.svg

    Diamond-shaped with yellow background and black border

  • Triangle warning sign (red and white).svg

    Triangular with red border and white background

  • Triangle warning sign (red and yellow).svg

    Triangular with red border and yellow background

  • Triangle warning sign (black and yellow).svg

    Triangular with black border and yellow background

  • Less common designs
  • Diamond warning sign (orange).svg

    Diamond-shaped with orange background and black border

  • Diamond warning sign (fluorescent green).svg

    Diamond-shaped with fluorescent green background and black border

  • Diamond warning sign (fluorescent pink).svg

    Diamond-shaped with fluorescent pink background and black border

  • Diamond warning sign (yellow-bordered black).svg

    Diamond-shaped with black background and yellow border

  • Triangle warning sign (red and blue).svg

    Triangular with red border and blue background

  • Pakistan - Danger Ahead.svg

    Red upward-pointing triangle

  • Pentagon warning sign.svg

    Pentagon with yellow border and black border

  • Pentagon warning sign (fluorescent green).svg

    Pentagon with fluorescent green background and black border

  • Pentagon warning sign (blue).svg

    Pentagon with blue background and white border

  • Circular with yellow background (Railroad Crossing)

  • Advisory Curve Speed English 25.svg

    Rectangular shape with yellow background (Curve, reduce speed)

  • World map of typical designs in use

  • Color indicates prevalent type of warning signs in use (click for large image and detailed info key).

General caution

General warning signs are used in instances in which the particular hazard, obstacle or condition is not covered by a standard sign. In Europe, they usually comprise an exclamation mark on the standard triangular sign (Unicode #9888: ⚠) with an auxiliary sign below in the local language identifying the hazard, obstacle or condition. In countries using diamond-shaped signs, the explanatory language is often written directly on the diamond-shaped sign, although it may contain only a general warning such as "Caution", and pictograms may also be used.

  • 1.33 Russian road sign.svg

    Belarus, Kazakhstan, Russia

  • Belgian road sign A51.svg

    Belgium

  • Chile road sign PE-10.svg

    Chile

  • China road sign 警 37.gif

    China

  • Muu vaara 189.svg

    Finland, Greece

  • A14.svg

    France

  • Zeichen 101.svg

    Germany

  • Ireland

  • Italy

  • Jamaica road sign W28.svg

    Jamaica

  • Japan road sign 215.svg

    Japan

  • New Zealand

  • Panama P-16.svg

    Panama

  • Znak A-30.svg

    Poland

  • South Korea road sign 140.svg

    South Korea

  • 1 1 54.svg

    Sweden

  • UK traffic sign 562.svg

    United Kingdom

  • Ukraine road sign 1.39.gif

    Ukraine

Obstacles

Diamond-shaped with reflectors are placed at point of curbs, dividers, or other lane obstacles. Rectangular signs with diagonal stripes indicate solid objects such as barricades, bridge abutments, utility poles or natural obstacles near the roadway. Left side obstacles are marked with stripes running high to low, left to right; right side obstacle signs use stripes running high to low, right to left; in a sense akin to International symbol of arrow pointing down toward side toward roadway.

  • U.S. and Canada divided road ahead sign

  • Alternate U.S. divided highway ahead sign

  • MUTCD W6-1B.svg

    U.S. divided road ahead sign

  • United States & New Zealand, road diverges/splits

  • NYSDOT NYW3-4.svg

    New York State pass left or right of obstacle sign

  • Philippines dual carriageway ahead sign

  • UK traffic sign 520.svg

    British, Hong Kong & Singapore "end of dual carriageway" sign

  • Australian Divided road ahead sign

  • Australia end divided road sign

Animals crossing the roadway

Signs may warn of wild animals (moose, bear, elk, deer, reindeer, polar bears, camels, wallabies, kangaroos, alligators, etc.) or farm animals (cows, horses, ducks, sheep) that may stray onto the road. In the United States, a "share the road" plaque is sometimes placed below these warning signs when used in this manner.

  • Philippines animal crossing sign

  • Kangaroo crossing sign in Australia

  • Brazil wild animals sign

  • Japan animals crossing

  • Italy, Germany and Latvia wild animal crossing sign

  • UK traffic sign 551.2.svg

    UK wild fowl warning sign

  • 1.26 Russian road sign.svg

    Russia cattle crossing sign

  • 1.27 Russian road sign.svg

    Russia wild animal crossing sign

  • Camel warning sign UAE.jpg

    Camel warning sign in the UAE

  • Sheep sign.jpg

    A sheep warning sign in the UK

  • Fareskilt 34.PNG

    Norway reindeer crossing sign

  • Norwegian-road-sign-polar-bear.svg

    Norway polarbear warning (Only on Svalbard)

  • Elephant crossing.jpg

    Wild elephant zone - Surin, Thailand

  • UK traffic sign 550.1.svg

    UK horse riders warning sign

  • Moose-warning.svg

    Moose sign from Sweden

  • Sweden road sign A19-6.svg

    Swedish sheep crossing

  • Sweden road sign A19-5.svg

    Reindeer crossing sign from Sweden

  • Sweden road sign A19-4.svg

    Swedish horse crossing

  • Sweden road sign A18.svg

    Swedish horse riders warning sign

  • China road sign 警 12.gif

    China: farm animals crossing

  • Verkehrsschild Enten.jpg

    Germany: ducklings

  • Kiwi sign.jpg

    New Zealand: kiwi crossing

  • Kiwi warning.jpg

    New Zealand: kiwi zone at night

  • U.S. and Canada deer crossing sign

  • U.S. cattle crossing sign

  • Caltrans SW59.svg

    Caltrans migrating bears sign

  • PADOT W11-26.svg

    Pennsylvania duck crossing sign

  • New Zealand: Equestrians

  • Sheep (New Zealand)

  • MUTCD W11-16.svg

    U.S. bear zone

  • MUTCD W11-18.svg

    U.S. bighorn sheep crossing

  • MUTCD W11-21.svg

    U.S. moose area

  • MUTCD W11-17.svg

    U.S. sheep crossing

  • Amphibienwanderung.svg

    Germany: amphibious animals area

  • Cassowary crossing.jpg

    Australia: cassowary crossing

Unusual vehicles in roadway

Also equipment (tractors, forklifts, snowmobiles, Amish buggies etc.) crossing or traveling along the road.

  • TW-Art045.png

    Taiwan: handcarts crossing.

  • PADOT W11-27.svg

    Pennsylvania tank crossing warning sign.

  • Znak A-34.svg

    Poland accident area ahead

  • U.S. tractor/farm vehicle crossing warning sign.

  • NYS NYW5-18.svg

    New York State motorcycle crossing warning sign.

  • NYS NYW5-19.svg

    New York State ATV crossing warning sign.

  • MUTCD W11-11.svg

    Ohio golf cart crossing warning sign.

  • MUTCD W11-14.svg

    Ohio horse-drawn vehicle ahead warning sign.

  • ODOT W11-14A.svg

    Horse-drawn vehicle ahead, Ohio.

  • Québec D-270-16.svg

    Canada logging truck crossing warning sign.

  • Québec D-270-8.svg

    Canada ATV crossing warning sign.

  • Québec D-270-9.svg

    Canada snowmobile crossing sign.

Road work or construction

These signs are often temporary in nature and used to indicate road work (construction), poor roads, or temporary conditions ahead on the road including: flagmen, survey crew, single-lane, detour, bridge out, utility crew ahead, blasting area, bump, dip, frost heaves, flooding (with signs labeled "High water"), soft shoulder, uneven pavement, freshly oiled road, loose gravel, smoke on road, trucks entering, etc. (Note that some "high water" signs are posted to alert drivers of a flood-prone area and do not actually mean that there is a flooded section of road ahead.) In France, Italy, Spain, Norway etc., warning (and speed limit) signs connected with road work have yellow background, these countries normally have white background on signs. In America and Ireland, signs connected with road work have orange background.

  • New Zealand road work sign

  • Brazil road work sign.

  • Ireland road work sign.

  • Working-in-taipei-2.jpg

    Taiwan road work.(traditional headgear variant)

  • Austria and Turkey road works sign.

  • Italy construction sign.

  • Norway road work sign.

  • Vägarbete.svg

    Swedish road work sign.

  • AK5 French road sign.svg

    France construction sign.

  • Poland construction sign.

  • Ukraine road sign 1.37.gif

    Ukraine road work sign.

  • UK traffic sign 7001.svg

    UK road work sign.

  • UK traffic sign 7009.svg

    UK loose chippings warning sign.

  • Netherlands and Turkey loose chippings warning sign.

  • Znak A-28.svg

    Poland loose chippings sign.

  • New Zealand loose chippings.

  • MTO TC-1.svg

    Canada construction ahead sign.

  • MUTCD CW20-1.svg

    U.S. road work ahead sign.

  • MUTCD CW20-1 METRIC.svg

    U.S. road work ahead sign, metric version.

  • MUTCD CW21-1a.svg

    U.S. and Canada Workers on the road sign.

  • NYS NYW8-4.svg

    New York State bridge closed ahead sign.

  • Caltrans CA40A.svg

    Caltrans traffic fines doubled in work zones sign.

  • NYS NYW8-46.svg

    New York State increased enforcement area work zone sign.

  • Roadclosedlosangeles.JPG

    Temporary road closure signs in Los Angeles.

Curves and corners

These signs indicate that ahead are dangerous or unexpected bends in the road, some being continuous, others being sharp-ended. Signs may indicate whether the curves are to the right or to the left and whether the degree to which the curves or bends are sharp. They may also indicate a series of curves or bends ahead.

  • MUTCD W1-1L.svg

    U.S. and Canada sharp turn ahead sign

  • MUTCD W1-2L.svg

    U.S. and Canada sharp curve ahead sign

  • MUTCD W1-3L.svg

    U.S. and Canada sharp reverse turns ahead sign

  • U.S. and Canada sharp reverse curves ahead sign

  • MUTCD W1-5L.svg

    U.S. and Canada winding road ahead sign

  • Caltrans W4-1R.svg

    California reverse turns ahead sign, with advisory speed limit

  • MUTCD W1-2aR.svg

    U.S. curve to the right sign, with advisory speed limit

  • UK traffic sign 512L.svg

    UK left bend ahead

  • France road sign A1a.svg

    France right curve sign

  • Netherlands bend to right

  • Philippines sharp turn ahead sign

  • Philippines sharp curve ahead sign

  • Philippines sharp reserve curves ahead sign

  • Philippines winding road ahead sign

  • Norway right bend

  • Brazil sharp curve to sign

  • Brazil curve sign

  • Brazil S-curve sign

  • Brasil A-3a.svg

    Brazil winding road sign

  • New Zealand curve to the left sign

  • Australia sharp turn ahead sign

  • Australia sharp curve ahead sign

  • Australia sharp reverse curves ahead sign

  • Australia winding road ahead sign

  • Indonesian left curve sign

  • Ireland sharp corner (Advisory speed <50 km/h)

  • Ireland curve sign (Advisory speed > 45 km/h)

  • India curve to right sign

  • India curve to left sign

  • Austria and Turkey left curve sign

  • Sweden road sign A1-1.svg

    Sweden and Greece curve to the left sign

  • Znak A-2.svg

    Poland curve to left sign

  • Ireland double bend

  • China road sign 警 3a.gif

    China double bend

  • Znak A-4.svg

    Poland double bend

  • UK traffic sign 513.svg

    UK double bend

  • Italy, Turkey, Latvia double bend

  • Ireland series of curves (winding road)

  • MUTCD W1-10R.svg

    U.S. and New Zealand side road junction on a curve sign

  • Ireland junction at corner

  • Ireland junction at a bend

Chevrons and arrows

Chevron-shaped symbols or arrows on rectangular signs may be placed at the actual location of the bend or curve to further mark the location of the curve and to assist in negotiation of the curve. They may also be used to indicate "merge" with other traffic, as for an on-ramp of a limited-access highway.

An unusual occurrence of the rectangular arrow sign appears on the eastbound approach to Dead Man's Curve in Cleveland, Ohio, USA, a curve so sharp that in places an arrow's stem is printed on one sign and the arrow's point is printed on another larger sign further down the road; from the driver's perspective at a distance the two signs visually blend together to form one large arrow image.

  • MUTCD W1-8R.svg

    U.S. and Canada curve chevron

  • Philippines road sign HM 1B R.svg

    Philippines curve chevron

  • Swedish road sign 7 1 1.svg

    Sweden curve chevron

  • 1.34.2 B Russian road sign.svg

    Russia curve chevrons

  • Singapore chevron signs

  • J4B.svg

    France curve chevrons

  • Australia curve chevron

  • New Zealand curve chevrons with advisory speed limit

  • J4.jpg

    France curve chevrons

  • Couronne de chevrons.JPG

    France ring of chevrons in traffic circle hub

  • 6139 - Gadmertal - View from Triftbahn lower station.JPG

    Switzerland curve chevrons

  • U.S. curve arrow

  • Canada curve arrow

  • Québec D-130-1-G.svg

    Quebec curve arrow

  • SR165sign.jpg

    U.S. curve arrow (vandalized with gunfire)

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Tunnels

The signs are used to indicate tunnels, where lights are usually required, and a general change in the light level. May also indicate low ceiling clearance. Truck drivers should also watch for prohibited cargo signs (e.g., hazmat, propane, explosives) upon approach to tunnels.

  • United States: California

  • A21cr.svg

    Czech Republic

  • Norway

  • 1.31 Russian road sign.svg

    Russia

  • Singapore

  • South Korea

  • Sweden road sign A26.svg

    Sweden

  • TW-Art048.png

    Taiwan

  • UK traffic sign 529.1.svg

    United Kingdom

  • New Zealand

Bridges

These signs are used where traffic may be constricted to a narrow bridge, or where the bridge may have a movable span closed to vehicles while boats pass (e.g., drawbridge or floating bridge). They may also be used for underpass to indicate low overhead clearance.

  • U.S. narrow bridge warning sign

  • U.S. narrow bridge warning sign (alternative)

  • MUTCD W5-3.svg

    U.S. one lane bridge warning sign

  • Philippines road sign W4-1.svg

    Philippines narrow bridge warning sign

  • India narrow bridge warning sign

  • New Zealand narrow bridge warning sign (one way bridges also have priority signs)

  • Italy drawbridge ahead sign

  • 1.9 Russian road sign.svg

    Russia and Latvia drawbridge ahead sign

  • UK traffic sign 529.svg

    UK drawbridge ahead sign

  • Pohyblivý most (cz).svg

    Czech Republic drawbridge ahead sign

  • Ontario and Quebec bridge warning sign

  • Canada and Australia narrow bridge warning sign

  • Québec D-340-2.svg

    Quebec deer-proof bridge warning sign

  • Singapore height prohibition ahead sign 4.5 m (15 ft)

  • U.S. sign. 12 ft 6 in=3.8 m

  • W110 Restricted Headroom - Warning Sign Ireland.png

    Ireland bridge height sign 4.65 m (15.3 ft)

  • New Zealand underpass height sign 3.82 m (12.5 ft)

  • Used in most of Europe, actually a prohibitory sign. 3.5 m=11½ ft

  • New York State restricted-weight bridge ahead sign 5 short tons (4.5 t)

Traffic signals

These warning signs indicate that traffic lights are ahead, and are often used when it is difficult to see that a traffic light may already be showing red, to warn a driver to prepare to slow down. They may be supplemented with flashing light or lighted sign when light is red or turning red. Some countries also have signs warning of signals for ramp meters, fire stations, and airfields.

  • Australia

  • Belgian road sign A33.svg

    Belgium

  • Brazil

  • China road sign 警 14.gif

    China

  • Colombia

  • A17.svg

    France

  • Germany

  • Indonesia

  • Ireland

  • Italy: vertical traffic signal ahead

  • Italian traffic signs - semaforo orizzontale.svg

    Italy: horizontal traffic signal ahead

  • Japan

  • Netherlands

  • New Zealand

  • Norway

  • Philippines

  • Znak A-29.svg

    Poland

  • South Korea road sign 125.svg

    South Korea

  • Spain traffic signal p3.svg

    Spain

  • UK traffic sign 543.svg

    United Kingdom, United Arab Emirates, Singapore

  • United States, Canada

  • United States: alternative

  • MUTCD W3-7.svg

    United States: ramp meter ahead

Warning signs for regulatory signs

As for traffic signals, above, some "stop" or "yield" signs may require additional warning or reminder, especially in dense areas or where the sign has been added recently.

  • U.S. and Canada stop sign ahead

  • U.S. stop sign ahead (alternative)

  • U.S. and Canada yield ahead sign

  • U.S. yield sign ahead (alternative)

  • MUTCD W3-5.svg

    U.S. speed zone ahead

  • MUTCD W3-5A.svg

    U.S. speed zone ahead (alternative)

  • MUTCD S4-5.svg

    U.S. school speed zone ahead

  • Australia stop sign ahead

  • Australia "give way" sign ahead

  • New Zealand stop ahead sign

  • New Zealand PW-2.svg

    New Zealand give way ahead sign

  • New Zealand speed limit ahead sign

  • Philippines stop sign ahead

  • Philippines give way sign ahead

  • Québec D-070-50.svg

    Canada speed zone ahead

  • China stop sign ahead

Intersections

These signs warn of road crossings at (crossroads, T-intersection, forks (Y-intersection), rotary/roundabout). They may also indicate "hidden driveway" intersecting the road ahead. (Compare with bridges, overpasses, viaducts).

  • Australia, New Zealand and Ontario crossroads ahead sign

  • Australia, New Zealand and Ontario side road intersection on left sign

  • Philippines road sign W2-1.svg

    Philippines crossroads ahead sign

  • Philippines priority crossroads ahead sign

  • Brazil crossroads sign

  • Brazil side road sign

  • Brasil A-10a.svg

    Brazil oblique side road sign

  • Brasil A-11a.svg

    Brazil successive opposite intersections sign

  • Brasil A-13a.svg

    Brazil merging traffic sign

  • UK traffic sign 504.1.svg

    UK crossroads ahead sign

  • Japanese Road sign (Crossroads).svg

    Japan crossroads sign

  • Italy, Latvia and Iran crossroads with right-of-way from the right sign

  • Italy, Latvia and Iran junction with a minor side-road sign

  • Italy, Latvia and Iran junction with a minor cross road sign

  • Sweden road sign A29-11.svg

    Swedish intersection with a minor cross-road sign

  • Sweden road sign A29-10.svg

    Swedish intersection with minor side-road sign

  • Ireland crossroads with a major road sign

  • Ireland junction with a minor side-road sign

  • Ireland staggered crossroads with roads of equal importance sign

  • Ireland junction at corner with a minor road sign

  • Ireland junction with dual-carriageway sign

  • U.S. and Canada intersection ahead sign

  • MUTCD W2-2.svg

    U.S. and Canada intersection ahead sign

  • MUTCD W2-3.svg

    U.S. and Canada intersection ahead sign

  • MUTCD W2-4.svg

    U.S. and Canada intersection ahead sign

  • MUTCD W2-5.svg

    U.S. and Canada intersection ahead sign

  • DELDOT W11-16-DE.svg

    Hidden intersection, Delaware

  • Roundabouts/rotaries

  • Australian and New Zealand roundabout sign

  • Philippines roundabout ahead sign

  • Brazil roundabout sign

  • W043 - Roundabout Ahead - Warning Sign Ireland.png

    Ireland roundabout ahead sign

  • Liikenneympyrä 166.svg

    Finland roundabout sign

  • Znak A-8.svg

    Roundabout ahead sign in Poland

  • UK large roundabout ahead sign

  • Italy, Latvia and Iran roundabout ahead sign

  • U.S. and Canada roundabout / traffic circle ahead sign

  • U.S. traffic circle ahead sign

Lane starts and ends

These signs indicate when a multilane highway is being narrowed, when a passing lane is ending, or where the road is widening or a passing lane starting. Another type of sign is used to indicate central "two-way" left turning lane in center of roadway. Warning signs may also warn of "Highway ends", where the road changes class or type.

  • MUTCD W4-2.svg

    U.S. and Canada right lane ends sign

  • Philippines road narrow sign

  • Brazil road narrows on both sides sign

  • Japan lane decrease sign

  • TW-Art028.3.png

    Taiwan: right lane ends ahead

  • Italy, Latvia and Iran road narrows from the right

  • UK road narrows on both sides ahead sign

  • Australia road narrow sign

  • NYSDOT NYW3-11.svg

    Canada and New York State one lane road ahead sign

  • NYSDOT NYW3-14.svg

    New York State one lane road ahead sign

  • Roadsign lane drop ahead.jpg

    Massachusetts lane drop ahead

Merge to stay with through traffic

In the United States and Canada, there is special signage for lanes that are about to exit, so that drivers who wish to remain on the main road have adequate time to merge. Such lanes are sometimes indicated by special striping ("alligator stripes") and the sign, "Thru Traffic Merge Left" (or right). On freeways, the green directions sign for the exit ramp may have the additional notation, "Exit Only," and should have black letters on a yellow background for emphasis.

  • MUTCD W4-3.svg

    U.S. and Canada Added Lane traffic sign

  • Caltrans W74.svg

    Caltrans W74 all traffic merge left sign

  • Philippines merging traffic sign

  • Japan join sign

  • Italy merge from right sign

  • Australia and New Zealand merging traffic sign

Roads with one entry point

Roadways that only have one entry/exit point - "dead end", "not a through street" or "no outlet".

  • U.S. dead end sign

  • U.S. "no outlet" sign

  • New Zealand: No exit

  • Australia and Philippines: No through road

  • PADOT W14-2-1.svg

    Pennsylvania No Through Street sign

  • PADOT W14-2-2.svg

    Pennsylvania loop street sign

  • NYCDOT W14-4.SVG

    New York City: dead end

  • Canada: cul-de-sac sign

  • Canada: "no exit" sign

End of roadway

  • Ontario Wa-8.svg

    Canada

  • U.S. (New York City): roadway ends.

  • MUTCD OM4-3.svg

    U.S. roadway ends here (aka the "red splat").

Pedestrian crossings

The signs are used to warn drivers of people walking in the street. They may also be used to warn of children playing, playgrounds, bicycle area, deaf child, blind pedestrians, and thickly settled zones where pedestrians may enter the road.

In California, United States near the Mexican border, there are warning signs showing a running family. This is to warn motorists to look out for illegal immigrants who try to escape authorities by running through freeway traffic. The symbol was created by California Department of Transportation employee John Hood in the late 1980s.[5]

  • UK traffic sign 544.svg

    UK zebra crossing ahead sign

  • France road sign A13b.svg

    France pedestrian crossing sign

  • Netherlands pedestrian crossing sign

  • Philippines pedestrian crossing sign

  • Norway pedestrian crossing sign

  • Brazil pedestrian sign

  • Indonesian pedestrian crossing sign

  • UK traffic sign 544.1.svg

    UK pedestrians on road ahead sign

  • Znak A-16.svg

    Poland pedestrian crossing ahead sign

  • Sweden road sign A13.svg

    Sweden pedestrian crossing sign (Used to warn ahead)

  • 1.22 Russian road sign.svg

    Russia pedestrian crossing sign

  • Australia: crosswalk ahead

  • U.S. and Canada pedestrian crossing sign

  • Children crossing, Ireland

  • PADOT W11-25.svg

    Blind pedestrian crossing sign, Pennsylvania

  • NYSDOT NYW7-7.svg

    Special needs child crossing, New York City

  • Delaware W21-15-DE.svg

    Blind child, Delaware

  • PADOT W11-22A.svg

    Hearing impaired child sign Pennsylvania

  • NYSDOT NYW7-6.svg

    Deaf child area sign, New York State

  • DELDOT W21-14-DE.svg

    Deaf child, Delaware

  • CALTRANS SW38 (CA).svg

    Deaf children near sign, California

  • W54 Special (CA-San Ysidro) -vector.svg

    Caution (running family), California

  • Autistic Child Warning Sign Ocean County New Jersey.svg

    Autistic child warning, USA

Schools

The signs mark school zones (in which lower speed limits may be in place), student crossings, crossing guards or signals ahead. In the U.S. and Canada, pentagon-shaped signs are used in place of the usual diamond-shaped signs. The shape of the U.S. school zone resembles a one-room schoolhouse and is the only U.S. sign shaped this way. Some Canadian provinces use an identical sign. Ontario uses a white on blue version of this sign.[6]

  • U.S./Canada school zone

  • Australia children sign

  • Australia: School ahead

  • New Zealand children sign

  • Philippines children sign

  • Indonesia children sign

  • UK traffic sign 545.svg

    UK children sign

  • Netherlands children sign

  • Brazil school zone sign

  • Brazil children sign

  • Norway children sign

  • France road sign A13a.svg

    France children sign

  • 1.23 Russian road sign.svg

    Russia children crossing sign

  • School sign (India).svg

    India school children crossing sign

  • W141 School Ahead -Warning Sign Ireland.png

    Ireland children crossing sign

  • Znak A-17.svg

    Poland children crossing sign

  • Znak T-27.svg

    Poland: kindergarten

  • MUTCD S3-1 (new).svg

    U.S. school bus stop ahead sign

Bicycle

  • Australia bicycles sign

  • Philippines bicycles only sign

  • Znak A-24.svg

    Poland bicycle crossing warning sign

  • 1.24 Russian road sign.svg

    Russia bicycle crossing warning sign

  • MUTCD W11-1 (fluorescent).svg

    U.S. bicycles ahead sign

  • NYCDOT SW-675.svg

    New York City share the road sign

  • PADOT W16-1.svg

    Pennsylvania share the road sign

  • MDDOT W16-1A.svg

    Maryland share the road sign

  • SF BIKE Lane SIGN.svg

    San Francisco bike lane sign

  • MUTCD W5-4A.svg

    U.S. bikeway narrows sign

Other signs with unprotected people

  • Fareskilt 39.PNG

    Norway skiers crossing sign.

  • Sweden road sign A17.svg

    Sweden skiers crossing sign.

  • MUTCD W15-1.svg

    U.S. playground ahead sign.

  • Canada playground ahead sign.

Fire stations

These signs warn of approach to where firefighters may be entering the road with fire engines or other emergency apparatus, where other drivers will have to stop and wait until they pass.

  • U.S. fire station sign.

  • Canadian fire station sign.

  • DELDOT W11-8-DE.svg

    Delaware emergency vehicles sign.

  • WISDOT W54-60.svg

    Wisconsin fire trucks entering when signal flashes sign.

  • TXDOT W11-11T.svg

    Texas emergency vehicles sign.

  • NYS NYW5-17.svg

    New York State firehouse sign.

  • MDDOT W11-8(1).svg

    Maryland "firehouse signal" sign.

Oncoming traffic

The signs may be used to warn people of oncoming traffic; shown when a motorway becomes a dual carriageway or a normal road without a central reservation or median.

  • Australia and New Zealand two-way traffic sign

  • Brazil two-way traffic sign

  • W080 Two-Way Traffic - Warning Sign Ireland.png

    Ireland two-way traffic sign

  • Italy, Latvia, Turkey and Iran two-way traffic sign

  • Sweden road sign A25.svg

    Sweden two-way traffic sign

  • Znak A-20.svg

    Poland two-way traffic sign

  • U.S. two-way traffic sign

Level crossing (railway crossing)

These signs are used to warn of level crossings ahead. In most countries, a red triangle warning sign is used, with various pictograms for unguarded crossings, crossings with manual gates, and automatic level crossings. In most of Europe, an old-style gate is used for a crossing with gates, and a steam locomotive for a crossing without gates. Germany uses an electric train. Similar pictograms are also used in Ireland, albeit on an amber diamond sign. In the United States the warning of all types of railway crossings is made using a circular yellow sign. The actual crossing is also marked with crossed "railroad crossing" crossbuck signs (stop, look, listen) and possibly lights, bells, and barriers.

  • Crossing with gate

  • Brazil controlled railroad crossing sign

  • UK level crossing with gate or barrier sign

  • Ireland level crossing with gates sign

  • Italy rail crossing with gates sign

  • Sweden road sign A35.svg

    Sweden crossing with gate sign

  • 1.1 road sign.svg

    Russia crossing with gate sign

  • Unguarded crossing

  • Philippines uncontrolled railroad crossing sign

  • Brazil uncontrolled railroad crossing sign

  • Railway level crossing without gate or barrier ahead

  • UK traffic sign 774.svg

    Railway or tramway crossing without gate or barrier (the crossbuck)

  • TW-Art036.2.png

    Taiwan: crossing, no gate, first warning

  • Italy rail crossing without safety arm

  • Sweden road sign A36.svg

    Sweden unguarded crossing sign

  • German unguarded crossing sign

  • 1.2 road sign.svg

    Russia unguarded crossing sign

  • Other crossings

  • Philippines railroad crossing with signals ahead

  • Ireland automatic level crossing sign

  • Finland tram crossing sign

  • Greece tram crossing sign

  • UK traffic sign 772.svg

    UK tramcars crossing ahead sign

  • 1.5 Russian road sign.svg

    Russia tram crossing sign

  • Průběžná, zábrana pro vysoká vozidla (01).jpg

    Tall vehicle tram wire shock risk (Czech)

  • U.S. railroad crossing sign (general)

  • MUTCD R15-7.svg

    U.S. rail line in highway median of cross street

  • Canada railroad crossing sign (general)

  • Caltrans light rail crossing ahead sign

  • MUTCD W10-12.svg

    U.S. skewed crossing (hazard to cyclists)

  • Australia and New Zealand railroad crossing with signals ahead

  • New Zealand cyclists watch for track-ruts

  • Warning at crossing (crossbucks)

  • U. S. railroad crossing sign

  • Philippines railroad crossing sign

  • CALTRANS W82-1.svg

    Caltrans light rail crossing sign

  • Thai RR crossing sign

  • Fareskilt 28b.PNG

    Norway signal track level crossing sign

  • Netherlands track level crossing sign

  • Austrian railway crossing sign

  • 1.3.1.svg

    Russia single-track railway sign

  • TW-Art072.4.png

    Taiwan: electric tram crossing, multiple tracks

  • MUTCD W10-5.svg

    U.S. humped-crossing low vehicle scrape risk

Falling rocks

These signs may be used to indicate the hazards of fallen or falling rocks on the road ahead. They are usually pictographs, but may also include wording, such as "fallen rock", "falling rock", or "rock slide". In Italy the words may be "caduta sassi" or "caduta massi"; in France "chûte de pierres"; in Mexico "derrumbes".

  • Australia and New Zealand falling rocks sign

  • Philippines road narrow sign

  • British & Hong Kong "falling rocks" warning sign

  • Fareskilt 16.PNG

    Norway falling rocks sign

  • Ukraine road sign 1.16.gif

    Ukraine falling rocks sign

  • Japanese "falling rocks" sign

  • NYS NYW4-14.svg

    New York State fallen rock sign

  • PADOT Falling Rocks Sign.svg

    Pennsylvania falling rocks sign

  • NCDOT W8-12.svg

    North Carolina falling rock sign

  • ITD W8-9.svg

    Idaho watch for rock sign

  • Caltrans W50.svg

    Caltrans rock slide area sign

  • NYS NYW4-15.svg

    New York State rock/mud slides warning sign

  • Caltrans "falling rocks" sign

  • Canada "falling rocks" sign

Other warnings (aircraft-related)

For example, a warning sign with the image of an aircraft in the middle of it indicates an airport or airfield, where drivers should be prepared for low-flying aircraft.

  • Philippines low flying aircraft warning sign

  • Fareskilt 41.PNG

    Norway low flying aircraft sign

  • 1.30 Russian road sign.svg

    Russia low flying aircraft sign

  • UK traffic sign 558.svg

    UK low flying aircraft sign

  • Ireland low flying aircraft sign

  • NYS NYW7-8.svg

    New York State low flying planes sign

  • DELDOT W11-23-DE.svg

    Delaware low flying aircraft

  • PADOT W11-16.svg

    Pennsylvania balloon launch area

  • WISDOT W11-58.svg

    Low flying airplanes cross here sign, Wisconsin

Crosswinds or Side winds

Flying socks, as indicated by a windsock on red triangle or yellow diamond signs, indicate locations where a strong side wind may cause the trajectory of the moving vehicle to change drastically, perhaps even "flying" across lanes, causing an accident.

  • Japan cross winds sign

  • UK traffic sign 581.svg

    UK side winds likely ahead warning sign

  • Sweden road sign A24-2.svg

    Sweden side winds warning sign

  • Fareskilt 42.PNG

    Norway cross winds sign

  • Znak A-19.svg

    Poland side winds sign

  • Ukraine road sign 1.17.gif

    Ukraine powerful crosswinds area sign

  • New York State crosswinds sign

  • PADOT W14-14.svg

    Pennsylvania high cross winds sign

  • ITD W8-19.svg

    Idaho frequent high winds sign

Road conditions

"Slippery when wet", "grooved pavement" (warning to motorcyclists and bicyclists), "Open joints on bridge", "Icy Road", "Bridge freezes before roadway" and variants thereof, and "bump" or "dip" ahead (not related to construction). Truck drivers will need to pay attention to "Steep grade" warnings (or "Down grade, use lower gear"), sometimes posted with the percent grade (e.g., 5 percent). Steep hills may also feature "Runaway truck escape" or "Emergency stop" areas with corresponding signs. The UK has a sign warning of "Adverse camber" on a curve. Also "Loose gravel", "Soft shoulder", "Speed hump", and "Watch for Ice."

  • Slippery pavement

  • United States slippery when wet

  • MUTCD W8-13.svg

    U.S. and Canada bridge ices before road

  • Australia and New Zealand slippery when wet

  • Philippines slippery when wet

  • Brazil slippery road sign

  • Japan slippery when wet

  • 1 1 12.svg

    Swedish slippery pavement sign

  • UK traffic sign 557.svg

    UK slippery road ahead sign

  • Znak A-15.svg

    Poland slippery pavement sign

  • Znak A-32.svg

    Poland icy or snow-covered roads

  • Czech black ice prone area

  • NDOR W15-2.svg

    Nebraska, may be icy ahead

  • MDOT W8-6A.svg

    Michigan, bridge may be icy

  • Steep grade
  • MUTCD W7-1.svg

    U.S. and Canada steep grade/hill sign

  • MUTCD W7-1A.svg

    U.S. steep hill sign

  • MUTCD W7-1B.svg

    U.S. and Canada steep grade/hill percentage sign

  • Caltrans SW4-1-(CA).svg

    California watch downhill speed

  • Australia and New Zealand steep descent sign

  • Philippines steep descent sign

  • Brazil steep descent sign

  • Taiwan road sign Art026.3.png

    Taiwan: hill 8% grade

  • Austria steep grade sign

  • UK traffic sign 523.1.svg

    UK 10% down grade sign

  • Netherlands 10% grade sign

  • A16.svg

    France 10% down grade sign

  • Fareskilt 06.PNG

    Norway steep grade sign

  • Znak A-22.svg

    Poland steep grade sign

  • South Korea road sign 117.svg

    Korea steep descent sign

  • Japan steep descent sign

  • DELDOT W7-1A-DE.svg

    Delaware hill sign (alternate)

  • ITD W7-3.svg

    Idaho steep grade percentage sign

  • Bumpy road

  • U.S. bump sign

  • NJDOT Bumps Sign.svg

    New Jersey bumps sign

  • U.S. rough road sign

  • Philippines hump sign

  • Brazil bump sign

  • Brazil rough road sign

  • Ireland bumpy road sign

  • Japan bumpy road sign

  • South Korea road sign 128.svg

    Korea bumpy road sign

  • Germany bumpy road sign

  • Ukraine road sign 1.11.gif

    Ukraine bump sign

  • Australia and New Zealand hump sign

  • Canada bump sign

  • Canada bumps sign

Miscellaneous

  • Other
  • NYSDOT NYW4-17.svg

    New York State rumble strips ahead sign

  • ITD W8-21.svg

    Idaho occasional blinding dust storms sign

  • HIDOT ROAD FLOODS DURING HIGH TIDE.svg

    Road floods during high tide, Hawaii

  • ITD W8-14.svg

    Frost heaves, Idaho

  • ITD W8-2.svg

    Severe storm area, Idaho

  • U.S. Dip

  • MODOT W3-10.svg

    Ferry crossing, Missouri

  • ODOT W8-18.svg

    Fog area, Ohio

  • Czech Republic road sign A 26.svg

    Czech fog area

  • Singapore Road Signs - Warning Sign - Accident Area.svg

    Singapore: dangerous area

  • Unusual warning signs
  • Crapaud Grands Vaux Jèrri.jpg

    UK: toad zone.

  • Tank-Crossing.jpg

    UK, Tank Crossing.

  • Road sign in Lithuania.JPG

    Lithuania: blind spot.

  • Quicksand warning sign Texel 2004.jpg

    Netherlands (Texel): caution quicksand.

  • Road Sign Penguins Crossing NZ.jpg

    New Zealand, Penguin Crossing.

  • Chucha crossing warning sign.jpg

    Colombia, opossum area.

  • Seattle - Harbor Island - rail signs on SW Massachusetts Ave 01.jpg

    U.S.: robot locomotives.

  • Bahnnübergang P1070672.jpg

    Germany: watch out, the railway crossing is privately owned. No unpermitted crossing.

  • Wildlife crossing.jpg

    Australia, Assorted Wildlife Crossing.

  • Isbjornskilt.png

    Svalbard, Polar Bear Area (new white bear variant).

  • Road sign warning of the danger from bears - NARA - 286014.jpg

    U.S. (vintage), Avoid Bears.

  • On Laos/ Thailand border: ahead we drive on opposite side of road.

  • Janowiec-znak-prom.jpg

    Poland: danger, car ferry ahead.

  • Helping to make a decission.JPG

    New Zealand: exceptional curves/ intersections/ R.R. x-ing situation.

  • LYNX Light Rail Testing Sign.jpg

    U.S.: trolley testing underway.

  • Nowarning.JPG

    U.S. (Alaska): Warning: No Warnings Ahead.

  • Yangmingshan owl crossing.jpg

    Taiwan, owl crossing.

  • Danger High Voltage - Riyadh, Saudi Arabia.jpg

    Danger High Voltage, Saudi Arabia.

  • Footbridge sign - geograph.org.uk - 103812.jpg

    UK, Slow Children & Ducks Crossing sign.

  • Warning sign hang gliders california.jpg

    U.S. (California), Hang-Glider Xing (crossing).

  • Warnschild.Pistenraumpenverkehr.JPG

    Germany: look out wide snowcat vehicles.

  • Groźba zawalenia budowli (Gdańsk 2009) (ubt).JPG

    Poland: buildings may collapse, steer clear.

  • Korea-seoul-Namsan-slow sign.jpg

    South Korea, Beware of White Squirrels.

  • Tsunami Hasard Zone -sign.jpg

    Thailand: go upland during tremors, tsunami zone.

  • Delta Junction American Bison Sign 2048px.jpg

    U.S. (Alaska) Bison may ram cars (hand-painted).

  • Warning sign Baboons.jpg

    South Africa: baboons.

  • WarningMarmotAustria.JPG

    Austria: caution, marmots!

  • Namibia: leopard zone.

  • Fruit Bats.jpg

    Australia: fruit bats, virus risk.

  • South Africa: lions, stay in car.

  • Beware of badgers - geograph.org.uk - 394773.jpg

    UK: badger crossing.

  • Gelsenkirchen - Nordsternpark - Emscher 06 ies.jpg

    Germany: danger of drowning in channel.

  • WWII urban front line: sightseers stay back.

  • Sowjetische Militärgebiet 1.JPG

    Germany: unexploded ordnance.

  • Vägskylt vid vägen mellan Stanley och Mount Pleasant.jpg

    Falkland Islands: slow, landmines.

  • Breckerfeld Walkmühle - Ennepe 03 ies.jpg

    Germany: flash flood area.

  • Flood warning.JPG

    Italy: flash flood area (hydroelectric activity).

  • Frill-neck lizard road sign.jpg

    Australia: frill-necked lizard zone.

  • Mosquit finlandes.JPG

    Finland: mosquito swarms.

  • Beware of hippopotamus.jpg

    South Africa: beware of hippos.

  • Greenland: musk ox area.

  • Otterwechsel 21-6 P9010001.JPG

    Germany: mind the otters.

  • Beware of warthog.jpg

    Namibia: warthog zone.

  • Sendeturm auf Feldberg - Eisabfall-Schild.jpg

    Germany: falling ice.

  • Vulcano Island-Mise en garde.jpg

    Italy: beware of toxic gases from fumaroles.

  • Dog sled road sign ilulissat 2007-08-23 retouched.jpg

    Greenland: dogsled crossing.

  • Wetter - Zeche Ver Trappe (Friederica) - 05 ies.jpg

    Germany: danger of collapse due to mine subsidence.

  • Breckerfeld - Ennepetalsperre - Umbecke-Vorsperre 05 ies.jpg

    Germany: unstable underground.

  • U.S.: underground fire – road might collapse.

  • Rödinghausen 04.2009 187.jpg

    Germany: pet and wildlife conflicts, disease-bearing ticks.

  • On barb wire at Auschwitz 1: high voltage.

  • Zeichen 201+1006-39.jpeg

    Germany: overhanging vegetation.

  • Ireland coast sign.jpg

    Ireland: quayside dropoff.

  • Australia, Tasmanian devil area.

  • Japan: Iriomote cat zone.

  • Golf Course Stray Balls warning sign.jpg

    Australia: golf ball zone.

  • Panneau-chute-palmes-Réunion.JPG

    Réunion Island: risk of falling palm fronds.

  • Faglar Trolle Ljungby.jpg

    Trolle Ljungby, Sweden: pheasant family crossing.

  • Negev sign.jpg

    Israel: camel zone sign, multilingual.

  • Cold Response 2010 - road sign in Norway.jpg

    Norway: military exercise underway.

  • Sign in Sofia - children dont have breaks IMG 7556.JPG

    Bulgaria: children ("children don't have brakes").

  • A897 road - geograph.org.uk - 653251.jpg

    Scotland: passing zone (plus hand-painted caution lambs sign on old tire).

  • Bosnia: (1992-95 wartime) hand-painted Alert Snipers!

  • U.S. (Alaska): deadly cold, proceed only at your own risk.

  • U.S. (California): message to undocumented immigrants that crossing the desert can be fatal.

  • Warning of death safari.JPG

    Danger of death, a safari park of Italy.

  • Deadly Waves at Any Time.jpg

    U.S. (Oregon): Deadly wave warning.

  • Příbram, Brodská, Pozor dopravní nehody s vážnými následky.jpg

    Czech, Alert: traffic accidents with serious consequences.

  • Vandal-modified joke signs
  • Vorsicht Rentierschlitten.jpg

    Germany: generic caution with added Santa sleigh.

  • Skvader sign.jpg

    Sweden: generic caution symbol with added skvader jackalope.

  • Siilivaroitus.jpg

    In Finland. a generic caution with vandal-added hedgehog picture.

  • Achtung skifahrende Kuh.JPG

    Vandal added skis to an Austrian Cattle Crossing sign.

  • Stork road sign.jpg

    Germany: stork area with added droppings.

  • Droiteval3.jpg

    In France, a vandal added animals.

  • Bechyně, pozor na nízko letící čarodějnice.jpg

    Generic Warning symbol to which a Czech vandal added: "beware of low-flying witches".

  • Most humorous sign in OZ.jpg

    Australian Cassowary Crossing and Speed Bump signs modified by vandal to be a combined before and after roadkill scene.

  • Pedestrian crossing sign with Red Bull can and wings.JPG

    Pedestrian Crossing with added wings and Red Bull can.

  • The road to Balmurrie - geograph.org.uk - 458.jpg

    In Scotland, Cattle Crossing sign vandal-modified to warn against elephants.

  • Wassenberg - Am Rosstor - Rosstorplatz 09 ies.jpg

    Germany: waiter added to caution sign.

  • Trappensee Warnschilder.jpg

    Germany: Kitesurfer added to bumpy road sign.

Warning signs with lights

Some warning signs have flashing lights to alert drivers of conditions ahead or remind drivers to slow down. In Britain, they are called warning light. Flashing lights can be dangerous for people with certain forms of epilepsy and/or sensory processing disorder.

  • Attached lights
  • Skoleskilt.jpg

    School zone traffic warning sign in Denmark.

  • A17 lumineux.jpg

    France red traffic signal ahead.

  • Photelectric lighted walk sign.jpg

    Crosswalk alert with solar-powered lit outline.

  • Skiltetrailer højre.jpg

    Denmark portable multipurpose traffic warning array.

  • School Zone sign with warning light in U.S.

  • FEMA - 7349 - Photograph by Bob McMillan taken on 07-04-2002 in Texas.jpg

    U.S. flood zone sign.

Non-traffic warning signs

Sign in Niagara Falls, Ontario, warning people not to climb over guard rail overlooking the Niagara River.

Warning signs are also found on other potential dangerous sites. At the base of electricity pylons or fences of substations or radiotechnical equipment with open parts leading high voltage, there are signs warning of high voltage. Warning signs can be found at the top of inclines. "Beware of Dog" is a typical warning of the presence of a dog, but there is no standard sign design. Others include wet floor signs.

See also

Note

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