CDL Full Practice Test Part 11

1. A CDL driver has been awake since 4:00 AM and is currently driving at 2:00 PM. The driver slept only 5 hours the night before and has been on duty for 10 hours. Which symptom indicates the driver should stop immediately due to fatigue?

2. What is the S-cam foundation brake, and how does it function?

3. What is the purpose of the Federal Bridge Formula under 23 USC 127?

4. A driver needs to uncouple a tractor from a semitrailer at a truck stop. What is the correct first action in the uncoupling procedure?

5. A CDL holder operating a placarded hazardous materials vehicle fails to stop at a railroad-highway grade crossing as required by federal regulations. This is their second conviction for a railroad crossing violation within a three-year period. What disqualification period will this driver face, and how does the hazardous materials cargo affect the penalty?

6. A commercial driver has been on duty for 6 hours and begins to experience signs of fatigue: heavy eyelids, frequent yawning, difficulty concentrating, and drifting slightly within the lane. The driver is 3 hours from the destination on a tight delivery schedule. What is the correct response to these fatigue warning signs?

7. What is the correct sequence for making a right turn with a tractor-semitrailer at an intersection with a tight corner?

8. What is the correct procedure for testing service brakes during the pre-trip inspection?

9. What is the total stopping distance for a loaded commercial motor vehicle traveling at 55 mph on dry pavement, and what three components make up this distance?

10. A driver performs an air brake leak test on a single-unit truck. With the parking brake applied and the engine off, the air pressure drops from 95 PSI to 90 PSI over a period of 90 seconds. Based on this result, what should the driver do?