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  2. Federal Motor Vehicle Safety Standard 108 - Wikipedia

    en.wikipedia.org/wiki/Federal_Motor_Vehicle...

    It is the responsibility of a manufacturer of vehicles and/or vehicle lamps to certify that each motor vehicle and/or lamp is in full compliance with the minimum performance requirements of FMVSS 108. This is a self-certification process as opposed to the type approval process which is used in other lighting regulations such as UNECE Regulation 48.

  3. Automotive lighting - Wikipedia

    en.wikipedia.org/wiki/Automotive_lighting

    The emergency stop signal is automatically activated if the vehicle speed is greater than 50 km/h (31 mph) and the emergency braking logic defined by regulation No. 13 (heavy vehicles), 13H (light vehicles), or 78 (motorcycles) is activated; the ESS may be displayed when a light vehicle's deceleration is greater than 6 m/s 2 (20 ft/s 2) or a ...

  4. Federal Motor Vehicle Safety Standards - Wikipedia

    en.wikipedia.org/wiki/Federal_Motor_Vehicle...

    Part 538: [87] Manufacturing incentives for alternative fuel vehicles; Part 541: [88] Federal motor vehicle theft prevention standard; Part 542: [89] Procedures for selecting light duty truck lines to be covered by the theft prevention standard; Part 543: [90] Exemption from vehicle theft prevention standard; Part 544: [91] Insurer reporting ...

  5. Rules for traffic lights - Wikipedia

    en.wikipedia.org/wiki/Rules_for_traffic_lights

    The conclusion, after monitoring 3,259 vehicles at 50 intersections over a period of days around the 5 boroughs, found that almost 10% of vehicles and 15% of taxis ran the red light, amounting to nearly 400,000 red lights run every single day.

  6. 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).

  7. 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 ...

  8. Traffic signal preemption - Wikipedia

    en.wikipedia.org/wiki/Traffic_signal_preemption

    Traffic signal preemption (also called traffic signal prioritisation) is a system that allows an operator to override the normal operation of traffic lights.The most common use of these systems manipulates traffic signals in the path of an emergency vehicle, halting conflicting traffic and allowing the emergency vehicle right-of-way, thereby reducing response times and enhancing traffic safety.

  9. Assured clear distance ahead - Wikipedia

    en.wikipedia.org/wiki/Assured_Clear_Distance_Ahead

    Non-commercial vehicles have even shorter lighting distances. [116] Drivers commonly drive the maximum posted speed limit at night, often in violation of the ACDA rule [116] [110] [46] [108] and this shows up in accident data. [117] [3]