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Under Washington law, what must be on the back of a bike ridden in the dark?

A red reflector, with a red light or flashing taillight allowed too.

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  1. A white light
  2. A red reflector ✔
  3. Nothing is required

Why: Washington requires a red rear reflector visible up to 600 feet in car headlights. A red rear light or a flashing LED taillight may be added, and riding experts recommend one.

Huh, didn't know that: Florida goes further and requires both a red rear lamp and a red reflector at night.

The dad joke
My rear reflector is so modest. Whenever I compliment it, it just reflects it back.
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References

Answer: A red reflector. Washington requires a red rear reflector visible up to 600 feet in car headlights. A red rear light or a flashing LED taillight may be added, and riding experts recommend one.

  1. RCW 46.61.780 Lamps and other equipment on bicycles app.leg.wa.gov/rcw/default.aspx?cite=46.61.780
    with a red reflector on the rear of a type approved by the state patrol
    Checked 2026-10-12.

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