Colorado Pre-Trip Inspection Test

About the Colorado Pre-Trip Inspection Test

The Colorado CDL pre-trip inspection test isn't a box you check — it's what keeps you alive on I-70, Wolf Creek Pass, and Raton Pass. Our state's mountain grades, high-altitude weather, and high-traffic corridors mean your pre-trip has to be spot-on. An inspector in Denver or Grand Junction will watch you check everything from air brakes to tire chains.

Colorado's altitude affects diesel engines and brake systems. Cold mornings on the Front Range can freeze air lines. Snow and ice demand you know how to inspect for chain clearance and traction devices. The state's agricultural and mining industries also mean you might carry heavy rigs on twisty two-lanes. That's why the pre-trip test here includes specific items the Colorado DMV wants you to call out.

Our practice test uses real inspection scenarios from Colorado examiners. You'll get 25 questions covering the parts you must name and check — vehicle front, engine compartment, cab, coupling systems, frame, and more. Each question mimics what you'll hear during the actual skills test at a Colorado DMV office.

What This Test Covers

• Air Brakes – Colorado's mountain descents require perfect brake function; failing this means an automatic fail.
• Lights and Reflectors – Snow and fog reduce visibility on I-25; you need to demonstrate you check every light.
• Tires and Wheels – Chain laws in Colorado mean you must know tire condition and proper chain mounting.
• Coupling Systems – Hauling heavy loads on steep grades requires a secure fifth wheel and gladhands.
• Steering and Suspension – Ice and wind on high passes demand tight steering and stable suspension.
• Emergency Equipment – Colorado law requires flares, triangles, and fire extinguisher; know where they belong.

Study Tips

Start with the Colorado CDL manual's pre-trip checklist — it's exactly what the DMV examiner uses. Practice saying each item out loud while you point. In Colorado, you'll get extra points for mentioning chain accessibility and high-altitude brake fade. Don't skip the under-vehicle inspection; examiners in Colorado Springs are strict about that.

Find a quiet parking lot and run through the inspection in 30 minutes. Time yourself. Use a friend or family member as a pretend examiner. Pay special attention to the air brake check — Colorado's steep grades make this the most common failure point. And remember, you can't just point; you have to name each component and state what you're looking for.

Colorado DMV Information

Colorado DMV offers CDL skills testing at locations in Denver (I-25 & Evans), Colorado Springs, Grand Junction, Fort Collins, and Pueblo. Appointments are required — walk-ins aren't accepted. Book online at the Colorado DMV website. The pre-trip inspection test costs $50 (includes the vehicle inspection portion of the skills test). You'll need to bring a registered, insured truck that matches the class of your permit.

If you fail the pre-trip, you can retake it after one business day, but you must pay the full skills test fee again. Colorado examiners allow up to three attempts in a 12-month period before you must reapply. Bring your medical examiner's certificate if required. Also bring your CDL permit, a valid ID, and proof of residency.

Frequently Asked Questions

Related Resources

Other Colorado CDL Practice Tests

Test Details

• State: Colorado
• Test: Pre-Trip Inspection Test
• Questions: 100
• Passing Score: 80%
• Time Limit: 30 minutes
• Cost: Free

Need ELDT Training?

If you're getting your first CDL, you need ELDT theory training before your skills test.