CA CDL PERMIT TEST- TANKER EXAM
QUESTIONS AND ANSWERS 100% PASS
2026/2027
When connecting a converter dolly to a second or third trailer, the trailer height should be: -
ANS Slightly lower than the center of the fifth wheel
(When connecting a converter dolly to a second or third trailer, the trailer height should be
correct. It should be slightly lower than the center of the fifth wheel.)
What should you do if the braking system cannot build up hydraulic pressure? -
ANS Downshift
(If your hydraulic braking system will not build up the pressure needed to slow or stop your
vehicle, there are a few possible solutions. Try shifting into a lower gear, pumping the brakes,
and/or using the emergency brake.)
Mirror adjustment can only be checked properly if: - ANS The trailer is straight.
If transporting chlorine, what must be in the vehicle? - ANS A gas mask
(If transporting chlorine in cargo tanks, a driver must have an approved gas mask in their
vehicle.)
2026/2027 ALLRIGHTS RESERVED
1
, An indicator that cargo contains hazardous materials is: - ANS The cargo is stored in cylinder
tanks.
How do ice cream trucks become hazardous to other drivers? - ANS Children often run
toward an ice cream truck without looking for other traffic.
(Ice cream trucks can create hazardous conditions for other drivers because they attract
children. Children often do not notice or pay attention to other vehicles on the roadway when
running to or from ice cream trucks.)
A loss of air pressure in the emergency line will cause: - ANS The tractor protection valve to
close.
(The tractor protection valve keeps air in the trailer's braking system should the trailer break
away or develop a leak. A loss of air pressure in the emergency line will cause the tractor
protection valve to open and the emergency trailer brakes to activate.)
When coupling, after you've connected the air lines to the trailer, you should: - ANS Supply
air to the trailer.
After coupling, there should be ____ between the upper and lower fifth wheel. - ANS No
space
(Before a trip, be sure to inspect all couplings. There should be no space between the upper and
lower fifth wheel.)
In a sudden turn, the ____ trailer is the most likely to turn over. - ANS Last
Your engine runs a pump used during the delivery of compressed gas. After delivery, you should
turn off the engine ____ unhooking the hoses - ANS Before
.
2026/2027 ALLRIGHTS RESERVED
2
QUESTIONS AND ANSWERS 100% PASS
2026/2027
When connecting a converter dolly to a second or third trailer, the trailer height should be: -
ANS Slightly lower than the center of the fifth wheel
(When connecting a converter dolly to a second or third trailer, the trailer height should be
correct. It should be slightly lower than the center of the fifth wheel.)
What should you do if the braking system cannot build up hydraulic pressure? -
ANS Downshift
(If your hydraulic braking system will not build up the pressure needed to slow or stop your
vehicle, there are a few possible solutions. Try shifting into a lower gear, pumping the brakes,
and/or using the emergency brake.)
Mirror adjustment can only be checked properly if: - ANS The trailer is straight.
If transporting chlorine, what must be in the vehicle? - ANS A gas mask
(If transporting chlorine in cargo tanks, a driver must have an approved gas mask in their
vehicle.)
2026/2027 ALLRIGHTS RESERVED
1
, An indicator that cargo contains hazardous materials is: - ANS The cargo is stored in cylinder
tanks.
How do ice cream trucks become hazardous to other drivers? - ANS Children often run
toward an ice cream truck without looking for other traffic.
(Ice cream trucks can create hazardous conditions for other drivers because they attract
children. Children often do not notice or pay attention to other vehicles on the roadway when
running to or from ice cream trucks.)
A loss of air pressure in the emergency line will cause: - ANS The tractor protection valve to
close.
(The tractor protection valve keeps air in the trailer's braking system should the trailer break
away or develop a leak. A loss of air pressure in the emergency line will cause the tractor
protection valve to open and the emergency trailer brakes to activate.)
When coupling, after you've connected the air lines to the trailer, you should: - ANS Supply
air to the trailer.
After coupling, there should be ____ between the upper and lower fifth wheel. - ANS No
space
(Before a trip, be sure to inspect all couplings. There should be no space between the upper and
lower fifth wheel.)
In a sudden turn, the ____ trailer is the most likely to turn over. - ANS Last
Your engine runs a pump used during the delivery of compressed gas. After delivery, you should
turn off the engine ____ unhooking the hoses - ANS Before
.
2026/2027 ALLRIGHTS RESERVED
2
