STOP, TAIL & TURN

Stop, Tail & Turn Lights For Peterbilt Trucks

Stop, tail, and turn lights are among the most safety-critical and frequently inspected lighting components on a Peterbilt truck. FMCSA regulations require these lights to be functional, correctly positioned, and displaying the right color at all times. A burned-out brake light or non-functioning turn signal is one of the most common roadside inspection violations — and one of the most preventable. We carry DOT-approved stop, tail, and turn light replacements for Peterbilt trucks, including LED upgrades that deliver longer service life and faster brake light activation than incandescent alternatives. Note: Please verify this page URL is correct before publishing.

Frequently asked questions about stop, tail & turn lights

What FMCSA regulations govern stop, tail, and turn lights on commercial trucks?

Under FMCSA 49 CFR Part 393, commercial motor vehicles must be equipped with functioning stop lamps (red, visible from 500 feet), taillamps (red, visible from 500 feet), and turn signal lamps (amber or red, visible from 500 feet) on both the front and rear. Brake lights must activate whenever the service brakes are applied. All required lighting must meet FMVSS 108 standards for photometric output and color. During a roadside inspection, inspectors check all required lighting for function — a single non-working stop or turn lamp can result in a driver or vehicle violation.

What is the advantage of LED stop and tail lights over incandescent on a Peterbilt?

LED stop and tail lights offer several meaningful advantages over incandescent on a Class 8 truck: they activate approximately 200 milliseconds faster than incandescent bulbs (which translates to several additional feet of stopping distance warning for following vehicles at highway speeds), they draw significantly less current (reducing alternator and electrical system load), and they last dramatically longer — often 50,000+ hours versus 1,000–2,000 hours for incandescent. For fleets focused on reducing lighting maintenance labor and roadside violation risk, upgrading to LED stop, tail, and turn lights is a high-return investment.

Can I replace just the bulb in a Peterbilt tail light, or do I need the full assembly?

It depends on the light's construction. Some Peterbilt tail light assemblies use replaceable bulbs in a traditional socket — in these cases, replacing the bulb (and confirming the socket and lens are undamaged) is the correct repair. LED stop and tail lights are typically sealed assemblies where the LEDs are integrated into the housing — when LEDs fail or the housing is cracked, the entire assembly is replaced. When ordering, confirm whether your existing light is a bulb-style or sealed LED unit, and order accordingly. Replacing a damaged lens without addressing a socket or wiring issue will result in a repeat failure.

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