Tank
Directions
This endorsement is required to haul any liquid or gaseous materials in a tank or tanks having a capacity of 1,000 gallons or more that is either permanently or temporarily attached to the vehicle or chassis. To receive this endorsement, applicants must pass a test. The test consists of 20 multiple choice questions. Each question has four possible answer choices. To pass, the applicant must answer at least 16 questions correctly. Test questions come from the New Jersey Commercial Driver Guide. Questions come from chapters covering: Driving Safely, Tank Vehicles, Hazardous Materials, Air Brakes and Combination Vehicles. The Tank endorsement can be used with the Class A, B or C CDL.
Passing grade:
When inspecting a tank, a driver should:
Explanation
Because there are many different types of tanks, each of which with its own specific features, a driver should always consult the operator's manual for information on how to inspect a particular tank.
If a trailer begins to skid, the driver should:
Explanation
If your trailer starts to skid while you are braking, you should release the brakes and allow them to begin to regain traction. Once its wheels have regained their grip on the road, the trailer will begin to straighten out and follow the tractor.
Placarded vehicles must carry fire extinguishers with a minimum rating of:
Explanation
The power unit of a placarded vehicle must be equipped with a fire extinguisher with an Underwriters Laboratories (UL) rating of 10 B:C or more.
When inspecting your vehicle, which of the following should not cause concern?
Explanation
Problems to check for when inspecting a vehicle's exhaust system include loose, broken, or missing exhaust pipes, mufflers, tailpipes, or vertical stacks; loose, broken, or missing mounting brackets, clamps, bolts, or nuts; exhaust system parts rubbing against fuel system parts, tires, or other moving parts of the vehicle; and exhaust system parts that are leaking.
Starting in which year were newly manufactured trailers required to have ABS?
Explanation
All trailers and converter dollies manufactured on or after March 1, 1998 must be equipped with Anti-Lock Braking Systems (ABS).
During a static leakage test, the maximum leakage rate for a double combination vehicle is:
Explanation
When performing a static leakage test on a double combination vehicle with air brakes, the leakage rate should be no more than 3 psi in one minute. If air leaks from the air brake system at a quicker rate, the vehicle should not be driven because something likely needs to be repaired.
Which of the following is a good rule to follow when making a turn?
Explanation
