E
.
Learndmv
DMV PRACTICE
Toggle navigation
Find your state
Exam types
Practice tests
Sign in
Create account
↗
← Leave quiz
Texas CDL Double Test 2
Practice mode
Question
1
of 20
QUESTION 1 / 20
Stopping distance can be affected by:
Choose one answer below.
A
Speed.
✓
B
Temperature.
✓
C
Time of day.
✓
D
Traffic.
✓
QUESTION 2 / 20
If you are unsure if there is enough space for your vehicle to safely travel under a bridge, you should:
Choose one answer below.
A
Speed up.
✓
B
Swerve as you pass under the bridge.
✓
C
Slow down.
✓
D
Drive on the shoulder.
✓
QUESTION 3 / 20
To ensure normal stopping power, drivers of vehicles equipped with a front brake limiting valve should:
Choose one answer below.
A
Set the control to normal.
✓
B
Set the control to the off position.
✓
C
Set the control to neutral.
✓
D
Keep the control at the halfway mark.
✓
QUESTION 4 / 20
A sign indicating a maximum safe speed:
Choose one answer below.
A
Is suggesting a driving speed, but vehicles may travel faster than the posted speed.
✓
B
Is suggesting a speed limit to be followed only by vehicles weighing more than 26,000 pounds.
✓
C
Should be followed and no vehicle should travel faster than the posted speed.
✓
D
Is only applicable to automobiles.
✓
QUESTION 5 / 20
Emergency brakes:
Choose one answer below.
A
Are not required on trucks.
✓
B
Are only required on trailers.
✓
C
Are required on tractors.
✓
D
Are optional.
✓
QUESTION 6 / 20
When backing, you should:
Choose one answer below.
A
Move quickly to get out of the way of other drivers.
✓
B
Try not to use your mirrors.
✓
C
Start from any position.
✓
D
Use a helper, if possible.
✓
QUESTION 7 / 20
If a traffic light has been green for a long time:
Choose one answer below.
A
It will probably stay green as you approach.
✓
B
It is likely broken.
✓
C
It is likely that the light will soon change to yellow.
✓
D
It is likely the light will skip yellow and change from green to red.
✓
QUESTION 8 / 20
What color is the low air pressure warning light?
Choose one answer below.
A
Green
✓
B
Orange
✓
C
Red
✓
D
Purple
✓
QUESTION 9 / 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 10 / 20
After finishing a pre-trip inspection, you should:
Choose one answer below.
A
Close the service line valve.
✓
B
Remove the service line valve.
✓
C
Leave the emergency line valve open.
✓
D
Leave the rear shut-off valves open.
✓
QUESTION 11 / 20
When checking the engine compartment:
Choose one answer below.
A
The parking brake should not be engaged.
✓
B
Wheels should be chocked.
✓
C
The engine should be running.
✓
D
The gearshift should be in first gear.
✓
QUESTION 12 / 20
A tractor protection valve is:
Choose one answer below.
A
A device that keeps air in the tractor or truck brake system, should the trailer break away or develop a bad leak.
✓
B
A device that prevents theft.
✓
C
A device that controls fuel levels.
✓
D
A device that allows the battery to recharge efficiently.
✓
QUESTION 13 / 20
Due to the "crack-the-whip" effect:
Choose one answer below.
A
Doubles and triples are more likely to turn over than other combination vehicles.
✓
B
A combination vehicle will make a loud noise if driven fast enough.
✓
C
The tires on a middle trailer will lock up at all stops.
✓
D
Vehicles following a truck will be able to travel faster than normal.
✓
QUESTION 14 / 20
When driving a double, the lightest trailer should be placed:
Choose one answer below.
A
In the first position.
✓
B
In the middle position.
✓
C
In the rear position.
✓
D
In any position.
✓
QUESTION 15 / 20
During a walk-around inspection, ensure there are no cracks on the brake drums that are more than ____ of the width of the friction area.
Choose one answer below.
A
One half
✓
B
One quarter
✓
C
One third
✓
D
One tenth
✓
QUESTION 16 / 20
When coupling a trailer:
Choose one answer below.
A
Make sure to couple matching glad hands.
✓
B
Any glad hand can be connected to any other glad hand.
✓
C
It is best to leave one glad hand unattached.
✓
D
Only one set of glad hands should be connected.
✓
QUESTION 17 / 20
If the air pressure warning light comes on, you should:
Choose one answer below.
A
Continue driving normally.
✓
B
Activate your hazard lights and continue driving.
✓
C
Call the local law enforcement agency.
✓
D
Safely exit the roadway and stop.
✓
QUESTION 18 / 20
____ is a thin layer of ice that forms on road surfaces.
Choose one answer below.
A
White ice
✓
B
Black ice
✓
C
Green ice
✓
D
Blue ice
✓
QUESTION 19 / 20
When driving a double or triple, it is important to remember that:
Choose one answer below.
A
The vehicle requires more space than most other vehicles.
✓
B
Other drivers will likely get out of your way when necessary.
✓
C
The vehicle likely weighs the same as other vehicles.
✓
D
The vehicle can easily fit into small spaces.
✓
QUESTION 20 / 20
How are dolly brakes released?
Choose one answer below.
A
By opening the air tank petcock
✓
B
By releasing the supply valve
✓
C
By closing the supply valve
✓
D
By turning off the retarder
✓
← Previous
0 of 20 answered
Next question →
Finish & see results →