E
.
Learndmv
DMV PRACTICE
Toggle navigation
Find your state
Exam types
Practice tests
Sign in
Create account
↗
← Leave quiz
Pennsylvania CDL Double Test 2
Practice mode
Question
1
of 20
QUESTION 1 / 20
A loss of air pressure in the emergency line will cause:
Choose one answer below.
A
The service brakes to activate.
✓
B
The tractor protection valve to close.
✓
C
The rear trailer to detach from the combination.
✓
D
The suspension springs to extend.
✓
QUESTION 2 / 20
When approaching a railroad crossing, you should:
Choose one answer below.
A
Increase your speed to get across the tracks as quickly as possible.
✓
B
Roll your window down to listen for a train.
✓
C
Rely on traffic control signals.
✓
D
Never try to outdrive an approaching train.
✓
QUESTION 3 / 20
A converter dolly that has ABS can be identified:
Choose one answer below.
A
By a blue sticker.
✓
B
By an orange sticker.
✓
C
By a yellow lamp on the left side of the dolly.
✓
D
By a blue lamp on the left side of the trailer.
✓
QUESTION 4 / 20
Why are roads especially slippery right after it begins to rain?
Choose one answer below.
A
The water mixes with oil and grease on the road.
✓
B
Roads are naturally slippery.
✓
C
Gravel often gets washed to the middle of the lane.
✓
D
Tires are not usually designed to drive in rain.
✓
QUESTION 5 / 20
Before entering a curve, you should:
Choose one answer below.
A
Upshift.
✓
B
Speed up.
✓
C
Drive on the shoulder.
✓
D
Downshift.
✓
QUESTION 6 / 20
To confirm that a trailer has ABS, you can:
Choose one answer below.
A
Look under the trailer for wheel speed sensors coming from the back of the brakes.
✓
B
Look under the hood for the ABS sticker.
✓
C
Look at the tires.
✓
D
Remove a tire and look for the ABS sensor on the axle.
✓
QUESTION 7 / 20
Which of the following surfaces provides the least amount of traction?
Choose one answer below.
A
Ice that is dry
✓
B
Ice that is wet
✓
C
Wet pavement
✓
D
Dry pavement
✓
QUESTION 8 / 20
Large combination vehicles take the longest amount of time to stop:
Choose one answer below.
A
When fully loaded.
✓
B
When partially loaded.
✓
C
When empty.
✓
D
When mostly loaded.
✓
QUESTION 9 / 20
Which of the following is not an example of a distracted person that motorists should be worried about?
Choose one answer below.
A
A driver talking to a passenger in their vehicle
✓
B
A child on the side of the road
✓
C
A construction worker on the side of the road
✓
D
A person sitting on a bench waiting for a bus
✓
QUESTION 10 / 20
Why do you need to drain air tanks regularly?
Choose one answer below.
A
Because the air gets old and needs to be replaced
✓
B
Because compressed air contains some water which must be drained from the tanks
✓
C
To allow for a change in air pressure
✓
D
To remove bad air from the tanks
✓
QUESTION 11 / 20
Passive railroad crossings:
Choose one answer below.
A
Are controlled by flashing lights.
✓
B
Are not controlled by any type of traffic control device.
✓
C
Have gates that lower when trains are approaching.
✓
D
Should never be crossed by a CMV.
✓
QUESTION 12 / 20
When backing up to couple a trailer, you should position the tractor:
Choose one answer below.
A
At a 90-degree angle in front of the trailer.
✓
B
Directly in front of the trailer.
✓
C
At a 30-degree angle in front of the trailer.
✓
D
At a 60-degree angle in front of the trailer.
✓
QUESTION 13 / 20
While inspecting coupling equipment before a trip, the air lines should not:
Choose one answer below.
A
Be connected to the glad hands.
✓
B
Have any slack.
✓
C
Be secured.
✓
D
Be leaking.
✓
QUESTION 14 / 20
If unsure if a road is becoming icy, a driver can:
Choose one answer below.
A
Guess.
✓
B
Open the window and check the front of the mirror for ice.
✓
C
Try to look at the road closely.
✓
D
Look at a weather forecast.
✓
QUESTION 15 / 20
Which of the following is not an example of a driver who might be a hazard?
Choose one answer below.
A
A driver operating a vehicle without first scraping ice off the windshield
✓
B
The operator of a rental truck
✓
C
The driver of a station wagon with items covering the back windows
✓
D
A person operating a pick-up truck
✓
QUESTION 16 / 20
Both systems in a dual air brake systems share:
Choose one answer below.
A
Air tanks.
✓
B
Hoses.
✓
C
Air lines.
✓
D
An air compressor.
✓
QUESTION 17 / 20
Which factor does not have an impact on a person’s blood alcohol concentration (BAC)?
Choose one answer below.
A
The number of alcoholic drinks consumed
✓
B
How quickly the alcoholic drinks were consumed
✓
C
The weight of the drinker
✓
D
The temperature of the drinks
✓
QUESTION 18 / 20
When traveling down a hill:
Choose one answer below.
A
Your speed will not change.
✓
B
Your speed will decrease.
✓
C
Your speed will increase.
✓
D
You will slow to a stop.
✓
QUESTION 19 / 20
Poisonous fumes can enter the cab due to:
Choose one answer below.
A
A defective exhaust system.
✓
B
The wrong type of fuel being used.
✓
C
A lack of oil in the engine.
✓
D
Under-inflated tires.
✓
QUESTION 20 / 20
If you plan to slow down, you can warn drivers behind you by:
Choose one answer below.
A
Slamming on the brakes.
✓
B
Tapping the brakes a few times and before braking.
✓
C
Turning on one set of turn signals.
✓
D
Putting your hand out the driver's side window and waving.
✓
← Previous
0 of 20 answered
Next question →
Finish & see results →