CDL Readiness Test

10 questions, balanced across the exam's topics. Answer each one, then submit for your practice readiness estimate and per-topic breakdown. This is a practice estimate — not a prediction or guarantee of your official exam result.

Question 1

Where are triples allowed?

In all 50 states given these road conditions Only at night for this specific maneuver In only about 20 states, mostly in the West and Midwest Nowhere under the specific conditions described

Question 2

Federal regulations require at least how much tread depth on trailer tires? (a roadside inspection scenario)

6/32 inch 4/32 inch 1/32 inch 2/32 inch

Question 3

A CDL holder registers 0.04% BAC before operating a commercial motor vehicle. What is the legal status?

Yes -- under the 0.08% limit under the current conditions No -- at or over the 0.04% CMV limit; disqualification applies No -- but only a small fine applies at this point in the trip Yes -- first offenses get warnings only under the specific conditions described

Question 4

Before anything else in the uncoupling procedure, you:

You chock the trailer wheels in this particular situation You lower the landing gear until it makes firm contact with the ground in this particular situation You walk around to confirm no air lines or cords are dragging for this specific maneuver You park the combination on straight, level ground and apply the parking brakes

Question 5

Children must:

Cross behind the bus in this particular driving situation Run alongside in this particular driving situation Stay out of the danger zone and never go behind the bus Play near the wheels given these road conditions

Question 6

The parking (spring) brakes should be used:

Whenever the vehicle is parked; never while moving except in an emergency Instead of the service brakes in this particular situation While driving downhill to help in this particular driving situation At every stoplight under these specific conditions

Question 7

You drive a 55-foot vehicle at 55 mph. Following distance?

6 seconds 7 seconds 5 seconds 8 seconds

Question 8

Tank outage means:

It cools the liquid under the current conditions Empty space left for the liquid to expand with temperature It is required for weighing in this driving situation It improves mileage in this driving situation

Question 9

An inspector checks tread depth on your trailer tires during a post-trip inspection. Below what measurement must the tire be replaced?

2/32 inch 4/32 inch 1/32 inch 6/32 inch

Question 10

To test the low-air warning signal, you:

Draining the tanks completely for this specific maneuver Driving until pressure drops for this specific maneuver in this particular situation Disconnecting the glad hands in this particular driving situation Turning off the engine and fanning the brake pedal until the warning activates before 60 psi

Unanswered questions count as incorrect. Your answers are graded on the server; no answer key is sent to your browser.

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