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  2. Traffic light - Wikipedia

    en.wikipedia.org/wiki/Traffic_light

    Traffic lights, traffic signals, ... there is no risk that railway signals will be masked by a tall vehicle between the driver and the signal; train speeds in fog are ...

  3. Stop sign - Wikipedia

    en.wikipedia.org/wiki/Stop_sign

    Red traffic lights signify stop, so the new specification unified red as a stop signal whether given by a sign or a light. The current mounting height of 7 ft (2.13 m) was first specified in 1971. The current mounting height of 7 ft (2.13 m) was first specified in 1971.

  4. Road signs in the United States - Wikipedia

    en.wikipedia.org/wiki/Road_signs_in_the_United...

    11th edition of the MUTCD, published December 2023. 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 (MUTCD) and its companion volume the Standard Highway Signs (SHS).

  5. Crossbuck - Wikipedia

    en.wikipedia.org/wiki/Crossbuck

    A crossbuck is a traffic sign used to indicate a level railway crossing. It is composed of two slats of wood or metal of equal length, fastened together on a pole in a saltire formation (resembling the letter X). Crossbucks are often supplemented by electrical warnings of flashing lights, a bell, and/or a boom barrier that descends to block the ...

  6. 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).

  7. What are 'smart traffic lights' and why are they coming to ...

    www.aol.com/smart-traffic-lights-why-coming...

    In a project separate and apart from the Palm Beach Gardens' work, the county and West Palm Beach have joined forces to seek a state grant to upgrade 13 traffic signals along a 1.9-mile route east ...

  8. 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]

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