Free CDL Practice Test

Correct!
A. check the emergency equipment required for your vehicle.

Explanation:
On all tank vehicles, the most important item to check for is leaks. Check under and around the vehicle for signs of any leaking. Don't carry liquids or gases in a leaking tank. In general, check the following. Check the tank's body or shell for dents or leaks. Check the intake, discharge, and cut-off valves. Make sure the valves are in the correct position before loading, unloading, or moving the vehicle. Check pipes, connections, and hoses for leaks, especially around joints. Check manhole covers and vents. Make sure the covers have gaskets and that they close correctly. Keep the vents clear so they work correctly. Check special purpose equipment. If your vehicle has any of the following equipment, make sure it works: vapor recovery kits, grounding and bonding cables, emergency shut-off systems, and/or a built-in fire extinguisher. Never drive a tank vehicle with open valves or manhole covers. Check the emergency equipment required for your vehicle. Find out what equipment you're required to carry and make sure you have it (and it works).

In the handbook:
8.1.: Inspecting Tank Vehicles - Leaks, Check Special Purpose Equipment, Special Equipment

Correct!
A. will surge back and forth when the tanker comes to a stop.

Explanation:
Liquid surge results from movement of the liquid in partially filled tanks. This movement can have bad effects on handling. For example, when coming to a stop, the liquid will surge back and forth. When the wave hits the end of the tank, it tends to push the truck in the direction the wave is moving. If the truck is on a slippery surface such as ice, the wave can shove a stopped truck out into an intersection. The driver of a liquid tanker must be very familiar with the handling of the vehicle.

In the handbook:
8.2.: Driving Tank Vehicles - Danger of Surge

Correct!
D. none of the above

Explanation:
In order to drive tank vehicles safely, you must remember to follow all the safe driving rules. Because of the high center of gravity and the surge of the liquid, you must start, slow down, and stop very smoothly. Also, make smooth turns and lane changes. Keep a steady pressure on the brakes. Do not release too soon when coming to a stop. Brake far in advance of a stop and increase your following distance. If you must make a quick stop to avoid a crash, use controlled or stab braking. Also, remember that if you steer quickly while braking, your vehicle may roll over.

In the handbook:
8.3.: Safe Driving Rules - Drive Smoothly, Controlling Surge

Correct!
D. none of the above

Explanation:
Some liquid tanks are divided into several smaller tanks by bulkheads. When loading and loading the smaller tanks, the driver must pay attention to weight distribution. Don't put too much weight on the front or rear of the vehicle.

In the handbook:
8.2.: Driving Tank Vehicles - Bulkheads

Correct!
A. A tank vehicle may carry liquid, but not liquid gas.

Explanation:
A tank endorsement is required for certain vehicles that transport liquids or gases. The liquid or gas does not have to be a hazardous material. A tank endorsement is only required if your vehicle needs a Class A or B CDL and you want to haul a liquid or liquid gas in a permanently mounted cargo tank rated at 119 gallons or more or a portable tank rated at 1,000 gallons or more. Before loading, unloading, or driving a tanker, inspect the vehicle. This makes sure that the vehicle is safe to carry the liquid or gas and is safe to drive.

In the handbook:
8: Tank Vehicles

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