What is a good rule-of-thumb for the amount of space you must keep in front of you?

• At speeds below 40 mph, you don't have to worry about it too much. At speeds above 40 mph it's important to keep at least 4 seconds of following distance.
• At least one second for every 10 feet of vehicle length at speeds below 40 mph. At greater speeds, you must add one second for safety.
• If you can read the license plate of the vehicle in front of you, you're too close
• At least one second for every 30 feet of vehicle length at speeds below 50 mph. At greater speeds, you must add one second for safety.

How long does it take a typical tractor-trailer to cross the tracks?

• At least 5 seconds to clear a single track and more than 10 seconds to clear a double track.
• At least 14 seconds to clear a single track and more than 15 seconds to clear a double track.
• About 25 seconds
• About 10 seconds

Based on the following figures, how much fuel can you legally add while remaining legal on the steer axle?

• 119.5 gallons
• 132.81 gallons
• 146 gallons
• 121.25 gallons

Once you know your current axle weights and the percentage of fuel weight that goes on the steer axle, you can use this formula you can calculate the amount of fuel you can take on:

Which of the following are best practices for backing a trailer?

• Back with the driver's side mirror pointing toward the parking spot you're aiming for and keep it there until you're fully backed in
• Primarily use the passenger's side mirror so you know what's on that side of the vehicle. Back in a curve toward the passenger's side whenever possible
• Try to position your vehicle so you can back in a straight line. If you must back on a curved path, back to the driver's side so you can see.
• Try to position your vehicle so you can along a gentle curve. If you must back on a curved path, back to the passenger's side so you can see.

You start driving for the day at 6:00 am. How long can you drive before you must take a 30-minute break?

• Until 12:00 pm
• Until 2:00 pm
• Until 10:00 am
• Until 11:00 am

You operate on the 70-hour/8 day logbook schedule and you've used up all of your 70 hours. Which of the following can you legally do without any of your 70 hours available?

• Take an online safety course for your company
• Do a pre-trip inspection on the vehicle
• You can do all these
• Wait on-duty for the mechanics to service the vehicle

Sliding your trailer tandems toward the front or back of the vehicle will primarily change the weight distribution between which sets of axles?

• It only removes weight from the trailer tandems
• The tractor's drive axles and the steer axle
• The tractor's drive axles and the trailer tandems.
• The steer axle and the trailer tandems

When inspecting a combination vehicle, you must check which of the following?

• Glide plate securely mounted to trailer frame
• 5th wheel release arm properly seated and safety latch/lock engaged
• All of these must be checked
• Locking jaws around the shank, not the head of kingpin

When securing concrete pipe with a diameter of more than 45 inches loaded crosswise, how many tiedowns are required through each pipe at minimum?

• 1
• 3
• 2
• It depends on the weight of the pipe.

A dunnage bag is:

• Material used to fill a void between articles of cargo and the structure of the vehicle that has sufficient strength to prevent movement of the articles of cargo.
• A waterproof sheet used to cover cargo.
• An inflatable bag intended to fill otherwise empty space between articles of cargo, or between articles of cargo and the wall of the vehicle.
• A device placed between the deck of a vehicle and car or between articles of cargo, intended to provide greater friction than exists naturally between these surfaces.

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