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2. Emergency vehicle lighting - Wikipedia

   en.wikipedia.org/wiki/Emergency_vehicle_lighting

   In the United States, a single emergency vehicle blocking a right-of-way could have as many as eight warning lights flashing 75 times per minute with different colors and levels of intensity, as well as different flash patterns and synchronization. Alaska, Arizona, Colorado, Minnesota, and Nebraska also use blue lights on snowplows. [99] [100 ...

3. Motorcycle headlamp modulator - Wikipedia

   en.wikipedia.org/wiki/Motorcycle_headlamp_modulator

   In the United States, Federal Motor Vehicle Safety Standard 108, which regulates all automotive lighting devices and systems, permits motorcycle headlamp modulation systems provided they comply with the performance, operation, and durability requirements contained therein [4] Canada's analogous regulation, Canada Motor Vehicle Safety Standard 108, likewise permits headlamp modulators that meet ...

4. Help Flash - Wikipedia

   en.wikipedia.org/wiki/Help_Flash

   Help Flash, V16 warning beacon lights. Help Flash is a signaling device for road safety to be used in the event of breakdowns, accidents or when vehicles need to stop on the road. It has been a pioneer among official V16 warning beacon lights, the emergency light signals for automobiles. It stands out from other beacons due to its automatic ...

5. Federal Motor Vehicle Safety Standard 108 - Wikipedia

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

   When it was initially published in 1968, [10] Motor Vehicle Safety Standard No. 108 was part of 49 CFR 371.21, incorporating several SAE recommended practices by reference. [11] The 1969 version of FMVSS 108 allowed the use of two headlamps, each 7 in (180 mm) in diameter, or four smaller 5 + 3 ⁄ 4 in (150 mm) headlamps. [11]: Table I

6. Wig-wag (automobile) - Wikipedia

   en.wikipedia.org/wiki/Wig-wag_(automobile)

   NWAS ambulance displays the operation of a wig-wag: only one headlight operates at a time, with the two flashing alternately at a preset rate. A wig-wag is a device for flashing an automobile's headlamps, in its simplest form, so only one of the two headlights operates at a time, with the two flashing at a preset rate. In its traditional form a ...

7. Automotive lighting - Wikipedia

   en.wikipedia.org/wiki/Automotive_lighting

   LED lights are used for flashing beacon lights on vehicles such as maintenance trucks. [139] Previously, traditional light sources required the engine to continue running to ensure that the battery would not become depleted if the lights were to be used for more than a few hours.