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  2. Federal Motor Vehicle Safety Standard 108 - Wikipedia

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

    FMVSS 108 is codified in Title 49 of the Code of Federal Regulations Part 571, Section 108. [1] The most recent version was published by NHTSA for comment in December 2007, [2] and since then, it has been amended in April 2011, [3] August 2011, [4] January 2012, [5] December 2012, [6] December 2015, [7] February 2016, [8] and February 2022.

  3. Visual approach slope indicator - Wikipedia

    en.wikipedia.org/wiki/Visual_approach_slope...

    Simple VASIs are obsolete, having been deleted from ICAO Annex 14 in 1995, however T-VASIS and AT-VASIS are still specified. T-VASIS is defined as twenty light units symmetrically disposed about the runway centre line in the form of two wing bars of four light units each, with bisecting longitudinal lines of six lights".

  4. Emergency vehicle lighting - Wikipedia

    en.wikipedia.org/wiki/Emergency_vehicle_lighting

    The police car on the right is a slicktop car, lacking the traditional roof-mounted lightbar seen on the car on the left. The aerodynamic properties of light bars can be important for police applications, as fuel efficiency and drag are concerns in patrol and pursuit. Because of this, some police cars do not have roof mounted lightbars.

  5. Federal Motor Vehicle Safety Standards - Wikipedia

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

    FMVSS No. 129: [33] New non-pneumatic tires for passenger cars- new temporary spare non-pneumatic tires for use on passenger cars; FMVSS No. 131: [34] School bus pedestrian safety devices; FMVSS No. 135: [35] Light vehicle brake systems; FMVSS No. 136: [36] Electronic stability control systems on heavy vehicles; FMVSS No. 138: [37] Tire ...

  6. PANS-OPS - Wikipedia

    en.wikipedia.org/wiki/PANS-OPS

    PANS-OPS defines "protection surfaces" which are imaginary surfaces in space that guarantee an aircraft a certain minimum obstacle clearance, similar to the purpose of obstacle limitation surfaces (OLS) in Annex 14. These surfaces may be used as a tool for local governments in assessing building development.

  7. Chevrolet 9C1 - Wikipedia

    en.wikipedia.org/wiki/Chevrolet_9C1

    A Chevrolet Impala 9C1 displayed at the 2008 Chicago Auto Show. 9C1 is a production code used by Chevrolet to designate a vehicle intended for use as a police car or car-based emergency vehicle. 9C1-designated vehicles are marketed under the Police Pursuit Vehicle or Police Patrol Vehicle (PPV) nameplate.

  8. Emergency vehicle equipment - Wikipedia

    en.wikipedia.org/wiki/Emergency_vehicle_equipment

    An ambulance with two red revolving lights mounted above two flashing red lights, with two speakers between for the vehicle's electronic siren.Also seen are two antennae; the one seen between the two speakers is for a two-way radio, while the one seen in front of the flashing light on the left is probably for the vehicle's conventional AM/FM radio.

  9. 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.