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Warning Lights for Trucks and Commercial Vehicles
DOT-compliant LED warning lights for commercial trucks, vocational equipment, and municipal vehicles. This category covers amber strobes, beacons, and light bars for a wide range of applications including utility trucks, construction vehicles, snowplow trucks, tow trucks, dump trucks, and road maintenance equipment. All lights in this category are LED.
Amber is the dominant output color, with clear lens units housing amber LEDs making up the largest portion of the selection. Additional output colors include red, white, and multi-color combinations such as amber/red, amber/white, amber/blue, and amber/green — used on snowplow trucks and construction zone vehicles in states that permit or require those color combinations. Mini light bars for truck roof mounting are included in the rectangular housing selection.
Mounting styles include surface, grommet, magnetic, bracket, flange, and stud mount. Magnetic mount units are battery-operated for portable, temporary applications where no wiring is available. Most lights in this category are multi-voltage and compatible with both 12V and 24V systems, with a selection of 12V-only units. Connection types include hardwired, plug-in, and battery-operated options. Brands include Buyers Products, Federal Signal, Grote, Peterson, Pro LED, and Truck-Lite.
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Frequently Asked Warning Light Questions:
What are warning lights used for on commercial trucks?
Warning lights are used on commercial and vocational vehicles to alert other drivers and pedestrians to the presence of a slow-moving, stopped, or potentially hazardous vehicle. Common applications include utility trucks, tow trucks, snowplow trucks, dump trucks, garbage trucks, construction zone vehicles, and road maintenance equipment. Amber is the standard color for most non-emergency warning applications.
What warning light colors are legal for commercial vehicles?
Amber is the universally accepted color for non-emergency warning lights on commercial vehicles and is legal in all states. Red is generally reserved for emergency vehicles in most jurisdictions. Amber/blue, amber/red, amber/white, and amber/green combinations are used on snowplow trucks and construction zone vehicles in states that specifically permit those color combinations. Always verify local and state regulations before installing multi-color warning lights.
What is the difference between a strobe, beacon, and light bar?
A strobe produces high-intensity flashes using a rapid burst pattern. A beacon is a rotating or flashing single-point light, typically in a dome housing, producing 360-degree visibility. A light bar is an elongated housing containing multiple LEDs or flash patterns, providing high-visibility warning across a wider area. Mini light bars for truck roof mounting are available in this category for applications requiring a low-profile warning light across the roofline.
What mounting style is best for a warning light?
The best mounting style depends on the application. Surface mount and bracket mount are common for permanent installations on truck bodies and equipment. Grommet mount works well for panel-mounted applications. Magnetic mount units are battery-operated and ideal for temporary or portable use where no wiring is available. Stud and flange mount options are available for specialty mounting locations.
Are warning lights DOT compliant?
Yes. All warning lights in this category are DOT compliant. For vehicles operating on public roads, DOT-compliant warning lights are required. Always verify that the light color and flash pattern meet the regulations in your state or operating jurisdiction, as requirements for specific colors and applications vary by state.
What does multi-voltage mean for warning lights?
A multi-voltage warning light is designed to operate correctly across a range of input voltages — typically 10–30V DC — making it compatible with both 12V and 24V electrical systems without modification. The majority of warning lights in this category are multi-voltage, making them suitable for mixed fleets operating both North American and European-spec equipment.