Are there requirements for strobe, beacon and other forms of auxiliary lighting?

Are there requirements for strobe, beacon and other forms of auxiliary lighting?

Many fleets continue to upfit their trucks with additional lighting. Fleet professionals need to be aware of regulations and requirements for this auxiliary lighting.

In general, strobe lights, beacons, and other forms of auxiliary lighting fall outside Federal Motor Vehicle Safety Standard (FMVSS) 108, as National Highway Traffic Safety Administration (NHTSA) does not regulate this type of lighting. However, there are still regulations you need to meet. Navigating lighting requirements to determine possibilities can be very involved and include review of multiple layers of federal, state and local requirements.

Helpful info

  • Many states have specific limitations on the color of flashing (strobe) lights, so be sure to check your state vehicle laws.
  • Though a strobe light is not covered by FMVSS 108, it is permissible if it doesn’t impair required lighting equipment effectiveness. (The location and luminous intensity of a strobe light can mask required lighting in FMVSS 108, so they will be factors in strobe light placement.)

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Great reminder Chris. Here in Ohio ancillary and warning lights are all over the place on vocational trucks. The largest incorrect application I see is the use of green as a warning light. When initially implemented Ohio Revised Code restricted the use of green warning lights to medium duty government trucks while being used in snow removal activities. Now this may have changed since first implemted but I don’t believe so. I have also noticed the use of red warning lights on tow trucks. This is illegal in Ohio but not in Michigan. So, as you mention one needs to be aware of state and local regulations.

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