Oregon CDL permit (CLP) knowledge tests — Practice

Question 1

How many air storage tanks are used in an air brake system?

Accepted Answer

The number varies.

Question 2

If you are unsure if there is enough space for your vehicle to safely travel under a bridge, you should:

Accepted Answer

Slow down.

Question 3

School bus stops may be changed by:

Accepted Answer

The school district.

Question 4

An air supply control in its "emergency" position will:

Accepted Answer

Apply the trailer emergency brakes.

Oregon CDL permit (CLP) knowledge tests — practice