Free CDL Practice Test

Question 1

CDL safety scenario 56: What is the greatest risk when pulling doubles or triples?

Accepted Answer

Rearward amplification and rollover from quick steering

Answer

Increase speed to finish the route sooner

Answer

Ignore it until the next terminal

Answer

Ask traffic behind you to go around

Question 2

What is the 'yard move' (YM) ELD special driving category?

Accepted Answer

An on-duty (not driving) special category for moving a CMV on private property (like a yard or facility), recorded on the ELD without counting as driving time in traffic

Answer

Driving within a 1-mile radius of the terminal only

Answer

A short-haul exemption for trips under 10 miles

Answer

An unregulated personal conveyance within 5 miles of the terminal

Question 3

When transporting chlorine in a cargo tank, which document must the driver have in their possession?

Accepted Answer

Written emergency response information, shipping papers, and a special HMSP

Answer

A bill of lading only

Answer

Only an MSDS sheet

Answer

No special documentation beyond the standard bill of lading

Question 4

What is the correct way to stop a trailer that has begun to sway?

Accepted Answer

Release the accelerator to slow down; do NOT brake hard or apply the trailer hand valve

Answer

Apply the trailer brakes using the hand valve to straighten it

Answer

Accelerate to put tension on the combination and stop the sway

Answer

Steer in the opposite direction of the sway aggressively

Question 5

CDL safety scenario 51: If the low air pressure warning activates while driving a commercial vehicle, what should you do?

Accepted Answer

Stop safely as soon as possible

Answer

Ignore it until the next terminal

Answer

Increase speed to finish the route sooner

Answer

Ask traffic behind you to go around

Question 6

When driving a tanker through an on-ramp or off-ramp curve, you should:

Accepted Answer

Slow to well below the posted ramp speed because of the high rollover risk

Answer

Speed up to clear the ramp

Answer

Take the posted ramp speed exactly

Answer

Brake hard midway through the curve

Question 7

CDL safety scenario 73: Why must cargo weight be balanced side to side?

Accepted Answer

Uneven weight can make the vehicle lean or roll over more easily

Answer

Ask traffic behind you to go around

Answer

Ignore it until the next terminal

Answer

Increase speed to finish the route sooner

Question 8

You are driving a 50-foot truck at 50 mph. The safe following distance is at least:

Accepted Answer

6 seconds

Answer

5 seconds

Answer

7 seconds

Answer

8 seconds

Question 9

Which condition would make a tire out-of-service during an inspection?

Accepted Answer

A sidewall bulge or knot — indicating internal structural failure

Answer

A small stone lodged in the tread

Answer

A tire inflated 5 psi below maximum

Answer

Slight weathering of the outer sidewall rubber

Question 10

What should you check when inspecting the fifth wheel during a pre-trip inspection?

Accepted Answer

That it is greased, properly mounted, not damaged, and that the locking jaws are closed firmly around the kingpin

Answer

Only that the grease level is sufficient

Answer

That the air lines are attached to it

Answer

That the height is set to the manufacturer specification

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