Maine has one of the most flexible green-light rules in the Northeast. Under Maine's motor vehicle statute, a municipal public works vehicle — or a vehicle operating under the direction of the Department of Transportation or the Maine Turnpike Authority — may be equipped with auxiliary lights that are green, white, or amber, or any combination of the three. Those lights can go on the front, rear, or sides and can flash, oscillate, strobe, or blink. That's more latitude than most states give.
What Maine law says
The rule is in Title 29-A § 2054. It allows municipal public works vehicles and DOT- or Turnpike-directed vehicles to run green, white, or amber auxiliary lights in any combination, mounted front, rear, or sides, in any flashing pattern. Maine also allows a flashing green auxiliary light on certain public service vehicles when they're assisting with a disabled vehicle, loading a wrecker, clearing debris, or working on utility infrastructure.
For snow removal specifically, note that Maine's plow-lighting subsections still specify an amber 360-degree light as the required warning light on the plow itself. So even with Maine's flexible green allowance, amber remains the backbone of a compliant plow setup.
Who can run green in Maine
Maine's green allowance is centered on public and public-directed work:
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Municipal public works vehicles
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Vehicles operating under the direction of Maine DOT or the Maine Turnpike Authority
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Certain public service vehicles (utility work, debris removal, disabled-vehicle assistance) for the flashing green auxiliary light
If you're a private operator, the path in is usually working under DOT or Turnpike direction, or qualifying as a public service vehicle for the specific activities the statute names. Confirm your category before equipping.
Flexible on green, but amber still anchors a plow
Maine's worth understanding in two layers. The general auxiliary-light rule for public works and DOT-directed vehicles is broad — green, white, amber, any mix. But the snow-plow rule is specific and still amber-based for the required 360-degree warning light. Practically, that means most Maine plow and maintenance trucks run amber as the core and add green for the visibility benefit Maine's law was designed to allow.
Shop amber/green lights for Maine public works and maintenance vehicles
Better-Viz amber/green LED warning lights fit municipal and DOT-directed trucks, with mounts for roof, pole, and surface. Build an amber-anchored setup and add green:
Shop all Better-Viz amber/green warning lights → collection
Frequently ask question
Does Maine allow green lights on public works trucks?
Yes. Municipal public works vehicles and vehicles directed by Maine DOT or the Maine Turnpike Authority may run green, white, or amber auxiliary lights in any combination.
Can a private contractor use green lights in Maine?
Usually only when operating under the direction of Maine DOT or the Turnpike Authority, or as a public service vehicle doing the specific work the statute names. Confirm your category before equipping a vehicle.
Do I still need amber on a snow plow?
Yes. Maine's plow-lighting rule still specifies an amber 360-degree warning light on the plow. Green is added for visibility, not as a replacement for amber.
Can green lights flash or strobe in Maine?
For qualifying public works and DOT-directed vehicles, yes — the auxiliary lights may flash, oscillate, strobe, or blink, and can be mounted front, rear, or sides.
