CDL Full Practice Test Part 15

1. Driver Maria completes her pre-trip inspection at 6:00 AM and discovers that the steering gear box shows visible fluid leakage and the steering wheel has 3 inches of free play. She reports this on her DVIR and informs her dispatcher. The dispatcher tells her that the delivery schedule is critical and instructs her to “just be extra careful” and proceed with the route. What is Maria’s correct response under federal regulations?

2. A driver operating under the 70-hour/8-day limit has accumulated the following on-duty hours over the past 7 days: Day 1 (10 hours), Day 2 (9 hours), Day 3 (11 hours), Day 4 (8 hours), Day 5 (10 hours), Day 6 (9 hours), Day 7 (10 hours). How many on-duty hours does the driver have available on Day 8 before reaching the 70-hour limit?

3. Which type of air brake is operated by the foot pedal during normal driving to slow or stop the vehicle?

4. You are driving a tractor-semitrailer on a rain-slicked highway when you feel the trailer begin to slide sideways toward the right. The tractor remains straight, but the trailer is drifting out of alignment—a condition known as trailer jackknife. What is the correct procedure to recover from this skid?

5. A driver traveling on a rural highway at night encounters a section of road where black ice has formed on bridges and overpasses. The temperature is 28°F, and the road appears dry in most sections. The driver notices the vehicle beginning to slide slightly when crossing a bridge. What environmental cues should have alerted the driver to black ice risk, and what driving adjustments should have been made proactively?

6. What is the primary reason that driver fatigue is considered as dangerous as alcohol impairment for commercial motor vehicle operation?

7. A driver operating a 65-foot combination vehicle is making a right turn at an intersection. The driver notices that during the turn, the trailer’s rear wheels are tracking significantly closer to the curb than expected and are about to jump the curb onto a sidewalk where pedestrians are walking. What corrective action should the driver take?

8. What is the proper steering method recommended for commercial motor vehicles?

9. A driver is transporting a single metal coil weighing 22,000 lbs on a flatbed trailer equipped with a metal coil rack (cradle). The coil is placed in the cradle with the eye of the coil oriented vertically (eye-to-the-sky configuration). Under 49 CFR Part 393 Subpart J specialized cargo requirements for metal coils, analyze the securement requirements and determine the correct tiedown configuration.

10. What is the federal maximum weight limit for a tandem axle group under bridge formula regulations?