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Light Bars & LED Lighting in Arizona

Conditional

Arizona requires no cover for auxiliary lamps. The limit is four front lamps over 300 candlepower lit at any one time on a highway, aimed so no part of the beam strikes the roadway beyond 75 feet.

Verified against primary sources · August 2026

What the law says

Contrary to widely repeated advice, no cover is required in this state. Mounting a light bar is legal everywhere; what states regulate is using it on public roads, and the usual constraint is a mounting-height ceiling plus a per-type lamp count — a roof-mounted bar often falls outside the permitted category entirely.

Specific Limits

Aiming
no beam striking the roadway beyond 75 ft
Max lit
4 front lamps over 300 candlepower at any one time on a highway
Cover required
No

Statute

A.R.S. §§ 28-946(B), 28-947(A)

Read the statute →

Frequently Asked Questions

Are light bars & led lighting legal in Arizona?
Arizona requires no cover for auxiliary lamps. The limit is four front lamps over 300 candlepower lit at any one time on a highway, aimed so no part of the beam strikes the roadway beyond 75 feet.
What are the exact light bars & led lighting limits in Arizona?
Aiming: no beam striking the roadway beyond 75 ft. Max lit: 4 front lamps over 300 candlepower at any one time on a highway. Cover required: No. Source: A.R.S. §§ 28-946(B), 28-947(A).

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