CDL Full Practice Test Part 12

1. A driver is operating a loaded tractor-semitrailer on a four-lane highway at 60 mph. The driver checks mirrors every 5–8 seconds and looks 12–15 seconds ahead. A vehicle in the right lane moves into the driver’s left-side no-zone without signaling. The driver’s left-side mirror shows empty space moments before. Which analysis explains this situation and what should the driver do?

2. What is the primary difference in driver responsibility between an active railroad crossing (with lights and gates) and a passive crossing (signs only, no signals)?

3. A CDL candidate is performing the parallel parking maneuver on the skills test. After the initial setup, the candidate begins backing. The examiner observes the trailer approaching the rear boundary cone too quickly. What should the candidate do, and how will this affect scoring if executed correctly?

4. You are driving a 65-foot tractor-semitrailer and need to make a right turn at an intersection. The curb is 10 feet from the edge of the right lane. What is the correct procedure to prevent the trailer from off-tracking into the curb or sidewalk?

5. A delivery driver completes a delivery route and parks the vehicle at the company terminal at 3:00 PM. The driver leaves for the day without performing any inspection. The next driver arrives at 7:00 AM the following day and discovers a flat tire during pre-trip inspection. Who is responsible for the DVIR entry regarding the tire condition?

6. A driver operating a 60-foot combination vehicle is traveling at 55 mph on a dry interstate highway. Using the standard following distance formula for commercial motor vehicles, what minimum following distance should the driver maintain behind the vehicle ahead?

7. A driver is conducting a pre-trip inspection on a tractor-semitrailer combination. During the trailer walk-around, the driver notices that one of the trailer’s dual tires on the rear axle has a visible bulge on the sidewall. The driver also notes that the matching dual tire appears to have lower tread depth than the bulging tire. What action should the driver take regarding this trailer tire condition?

8. While driving on a slippery road, a driver begins to feel the trailer starting to jackknife — the trailer is swinging to the right while the tractor continues straight. The driver had been using the trailer hand valve for braking on the downgrade. What caused this situation and what is the correct recovery action?

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

10. Under FMCSA regulations, a commercial driver with a blood alcohol concentration (BAC) of 0.04% or higher while operating a CMV faces what consequence for a first offense?