idaho
CDL Practice Test

An air system that is fully charged will typically have ___ psi of pressure.

How often should air tanks be drained?

The most stable tanker shape is:

Which of the following will confirm that you are driving with anti-lock brakes?

Your bus starts to lean toward the outside on a banked curve, you are:

At 55 miles-per-hour it takes about 6 seconds to stop a fully loaded truck and the braking distance is:

The belt that you need to make sure is securely mounted, without frays, and adjusts and latches properly is the:

Select the true statement about emergency brakes:

When inspecting your bus, you must make sure that:

This object releases the fifth wheel locking jaw to allow uncoupling.

For emergency braking when driving a double trailer and having to use your brakes to avoid a collision is to:

Take extra caution when driving smooth bore tanks during:

The safety valve is usually set to open at:

This object should not be damaged, bent, or rusted through and be evenly centered with the tires and dual wheels evenly separated.

Select the true statement in regards to brake drums:

You do not have to stop at railroad crossings, but must slow down and carefully check for other vehicles:

_____ create a little above 90 degree angle between the adjuster arm and push rod when the brakes are released and no less than 90 degrees when the brakes are applied.

You are driving a 40 foot truck at 35 MPH, how much space (in seconds) should you keep in front of you?

Which two special conditions indicate that you should downshift?

In what position should the converter dolly air tank drain valves and pintle hook be in?

Select the true statement in regards to unhooking the pintle hook while the converter dolly is still under the trailer.

Which seats not securely fastened to the bus are usually allowed?

You should follow behind other vehicles ______when traveling under 40 mph.

How many seats may be placed in the aisle if the bus is a charter and is carrying agricultural (farm) workers?

Charter drivers should not:

What is most likely to occur when driving a tanker truck and the front wheels begin to skid?

Signs of distracted drivers include:

You should be extra cautious when___while driving a smooth bore tanker combination.

Drivers who transport route controlled radioactive materials must carry a dated certificate of radioactive materials training. This training must have ocurred within the last:

As the driver of a bus, how can you best avoid hindering other traffic on the highway?

The minimum tire tread depth for front tires is:

Which of the following are possible causes of tire fires?

When you have a major leak in the service line and you apply pressure to the brakes, the service air pressure will escape and:

With Division 1.2 or 1.3 Explosive B, how close to the travelled part of the roadway can you park?

What is a passive railway crossing?

____is what can legally hold the parking brake or emergency brake in position for a bus, truck, or truck tractor.

Select the true statement about dual air brake systems:

What might happen if a trailer is too high when you try to couple?

You should have the fifth wheel plate greased as recommened because:

A shipper’s certification is best described as _____.