Washington CDL Pre-Trip Inspection: Lights Test 2026

Lights and signals are one of the more straightforward parts of a Washington pre-trip inspection, but they're also one examiners check without exception, and this drill covers headlights, turn signals, brake lights, hazards, and reflective equipment in the detail the exam expects.

Expect questions on how to properly test turn signals and brake lights without a second person's help, what reflective triangles and markers a Washington CDL vehicle is required to carry, and how to identify a burned-out bulb versus a wiring issue during inspection. Lights and signals questions are precise, and the Washington CDL exam expects precise answers.

Run through this lights and signals drill and check any uncertain answer against your Washington CDL Manual before moving on. It's a small section of the overall pre-trip, but a missed light is an easy, avoidable point to lose.

Keep going:

• Washington CDL Pre-Trip Inspection Practice Test
• Washington CDL Pre-Trip Inspection Practice Test 2
• Washington CDL Pre-Trip Inspection Test
• Washington CDL Practice Test
• Washington Air Brakes Practice Test
• Washington CDL Combination Practice Test
• Washington Hazmat Practice Test
• Washington Class A CDL Practice Test
• Washington CDL Practice Test

Every question traces back to the Washington CDL Manual - skim the right-of-way and signs chapters before your retake.