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  2. Traffic light - Wikipedia

    en.wikipedia.org/wiki/Traffic_light

    The regular traffic light colours are red to stop traffic, amber for traffic change, and green for allowing the traffic, arranged vertically or horizontally in that order. Although this is internationally standardised, [ 4 ] variations in traffic light sequences and laws exist on national and local scales.

  3. Variations in traffic light operation - Wikipedia

    en.wikipedia.org/wiki/Variations_in_traffic...

    In New Zealand, where traffic is on the left, when a road is given a green light from an all-direction stop, a red arrow can continue to display to turning traffic, holding traffic back while a pedestrian crossing on the side road is given a green signal (for left turns) or while oncoming traffic goes straight ahead and there is no permissive right turn allowed (for right turns).

  4. Traffic light rating system - Wikipedia

    en.wikipedia.org/wiki/Traffic_light_rating_system

    In the British Civil Service and other departments of the United Kingdom government, traffic light colours are used as a coding system for good or bad performance, usually known as a 'RAG rating'—Red, Amber, Green. For example, a red workload performance would mean inadequate, amber would mean reasonable, and green would mean good.

  5. Rules for traffic lights - Wikipedia

    en.wikipedia.org/wiki/Rules_for_traffic_lights

    Traffic light in Chelyabinsk, Russia showing a green light with a digital countdown (in the centre aspect) of the time left until the signal switches to amber. Red light running occurs when a motorist enters a junction any time after the signal light turns red unless a legal turn on red manoeuvre is completed. [3]

  6. Emergency vehicle lighting - Wikipedia

    en.wikipedia.org/wiki/Emergency_vehicle_lighting

    Blue lights can be used alone or with an additional siren. The siren may not be used alone. The operator of an emergency vehicle may disregard speed limits and traffic lights with caution. Amber lights, however, are not regulated, but are used for any vehicle that need special attention, such as tow-trucks, snow plows, and parking enforcement.

  7. Down traffic light near you? Here's what you should do - AOL

    www.aol.com/news/down-traffic-light-near-heres...

    Here's a short guide on what to do if you come across a flashing red traffic light.

  8. Amber traffic warning issued as widespread delays expected - AOL

    www.aol.com/amber-traffic-warning-issued...

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  9. Yellow trap - Wikipedia

    en.wikipedia.org/wiki/Yellow_trap

    The yellow trap occurs when the timing of the amber lights (also known as "yellow" lights in the USA) is asymmetric for two-way traffic on a single road: when a vehicle is waiting to turn across oncoming traffic and receives an amber light from the traffic signal, the driver may assume that oncoming traffic also has received an amber light and ...