"Ball signal" redirects here. For the 19th century mechanical railway signal, see North American railroad signals § Early mechanical signals.
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Swedish traffic light (left) for use by public transport vehicles only. All signals use white lighting and special symbols ("S", "–" and an arrow) to distinguish them from regular signals. The small light at the top tells the driver when the vehicle's transponder signal is received by the traffic light.
In traffic engineering, there are regional and national variations in traffic light operation. This may be in the standard traffic light sequence (such as the inclusion of a red-amber phase) or by the use of special signals (such as flashing amber or public transport signals).
and 28 Related for: Variations in traffic light operation information
standardised, variations exist on national and local scales as to trafficlight sequences and laws. The method was first introduced in December 1868 on...
indications shown to traffic on traffic signal aspects (a single light on a signal head). For example, a green phase gives all traffic from a particular...
Pedestrian crossing Cycle crossing Red trafficlight Red & yellow trafficlight Green trafficlight Yellow trafficlightLight signals for pedestrians Explosives...
This article is a summary of traffic signs used in each country. Roads can be motorways, expressways or other routes. In many countries, expressways share...
background instead of white. Traffic signals ahead Crossroads T-junction Side road Staggered junction Traffic merges from the left Traffic merges onto the main...
In the United States, road signs are, for the most part, standardized by federal regulations, most notably in the Manual on Uniform Traffic Control Devices...
Prohibitory traffic signs are used to prohibit certain types of manoeuvres or some types of traffic. No admittance to unauthorised personnel, usually...
Road signs in Singapore closely follow those laid down in the traffic sign regulations used in the United Kingdom, although a number of changes over the...
Cattle Sheep Wild animals Equestrians Steep hill downwards Trafficlight Two-way traffic ahead Risk of rockfall Quayside or river bank Cyclists Low-flying...
Road signs in South Korea are regulated by the Korean Road Traffic Authority (Korean: 도로교통안전공단). Signs indicating dangers are triangular with a red border...
defense) signs Temporary traffic control (construction or work zone) signs School signs Railroad and light rail signs Bicycle signs In the United States, the...
ahead Trafficlight ahead Slippery road Fallen rocks Bumpy road Traffic merges from the left Left lane ends Road narrows on both sides Two-way traffic ahead...
Road signs in Botswana are based on the SADC Road Traffic Signs Manual, a document designed to harmonise traffic signs in member states of the Southern...
The Convention on Road Traffic, commonly known as the Geneva Convention on Road Traffic, is an international treaty promoting the development and safety...
traffic Priority over oncoming traffic Priority road End of priority road Turn right on red light Go straight on red light Turn left on green light Closed...
minor side-road from left Merging traffic from right (formerly used ) Merging traffic from left (formerly used ) Traffic has priority over oncoming vehicles...
priority to other traffic on the main road ahead B7: Stop: Give priority to traffic on the main road ahead (formerly used ) C1: Road closed in both directions...
Road signs in Tanzania are based on the SADC Road Traffic Signs Manual, a document designed to harmonise traffic signs in member states of the Southern...
Wild animals Roadworks TrafficlightTrafficlight Low-flying aircraft Crosswinds from left Crosswinds from right Two-way traffic Tunnel Other dangers Intersection...
Road Traffic, commonly known as the Vienna Convention on Road Traffic, is an international treaty designed to facilitate international road traffic and...
falling of a cliff A14 Trafficlight incoming A14-1 Trafficlight incoming A15 Road works A16 Trafficin both directions A17 Traffic accident A18 A queue...
with a road that does not have priority 2e) — Merging traffic on the left 2f) — Merging traffic on the right 3a) — Hump 3b) — Dip on road 3c) — Uneven...
Roundabout Trafficlight T-junction T-junction major road ahead Major road ahead Staggered junction Merging traffic from right Merging traffic from left...
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