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  2. 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).

  3. Road signs in the United States - Wikipedia

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

    Traffic signal photo enforced. R10-19P Photo enforced (symbol) (plaque) R10-19aP ... Draw bridge ahead. W3-7 Ramp meter ahead. W3-8 Ramp metered when flashing. W3-9

  4. California Manual on Uniform Traffic Control Devices - Wikipedia

    en.wikipedia.org/wiki/California_Manual_on...

    A metric version was published in 1996 by the then-renamed Department of Transportation's Division of Traffic Operations. [2] The iconic "immigration sign" was coded as W54 in the 1990s. In 2000, Caltrans and the California Traffic Control Devices Committee undertook an effort to reconcile the Traffic Manual with the national MUTCD.

  5. Manual on Uniform Traffic Control Devices - Wikipedia

    en.wikipedia.org/wiki/Manual_on_Uniform_Traffic...

    The Manual on Uniform Traffic Control Devices for Streets and Highways (usually referred to as the Manual on Uniform Traffic Control Devices, abbreviated MUTCD) is a document issued by the Federal Highway Administration (FHWA) of the United States Department of Transportation (USDOT) to specify the standards by which traffic signs, road surface markings, and signals are designed, installed ...

  6. Traffic sign design - Wikipedia

    en.wikipedia.org/wiki/Traffic_sign_design

    Traffic sign design involves any tasks in the process of designing traffic signage. Traffic signs may provide information about the law, warn about dangerous conditions and guide roadway users. Traffic signs vary depending upon their use, using different symbols, colors and shapes for easy identification.

  7. Traffic sign - Wikipedia

    en.wikipedia.org/wiki/Traffic_sign

    Temporary traffic control (construction or work zone) signs; School signs; Railroad and light rail signs; Bicycle signs; In the United States, the categories, placement, and graphic standards for traffic signs and pavement markings are legally defined in the Federal Highway Administration's Manual on Uniform Traffic Control Devices as the standard.

  8. Comparison of MUTCD-influenced traffic signs - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_MUTCD...

    Nearly all MUTCD-influenced warning signs are diamond-shaped and yellow; some warning signs may be fluorescent yellow-green to draw extra attention. There are a few exceptions to this: Pentagonal signs are used in school zones in the United States, Liberia, Mexico, Malaysia and many areas in Canada.

  9. Road traffic control device - Wikipedia

    en.wikipedia.org/wiki/Road_traffic_control_device

    Road traffic control devices are markers, signs and signal devices used to inform, guide and control traffic, including pedestrians, motor vehicle drivers and bicyclists. These devices are usually placed adjacent, over or along the highways , roads, traffic facilities and other public areas that require traffic control .