General knowledge
This can change a vehicle's overhead clearance?
Cargo weight
After the trailer has been coupled to the tractor, the tractor protection valve should be in this position
Normal
When driving triples, it is safest for the lightest trailer to be positioned in the
Rear
Are bulk containers which are not permanently attached to a truck
Portable tanks
Will come on fully when air pressure drops between 20-45psi
Spring brakes
After starting the engine this gauge should start rising immediately
Oil pressure gauge
This much space should be between the upper and lower fifth wheel after coupling
None
To prevent the trailer from rolling away and causing injury when you park, you should use
Wheel chocks
Holes in a bulkhead that let liquid flow through
Baffles
A warning signal you can see and hear when air pressure in a tank falls between 55-75psi
Low air warning light and buzzer
When hydroplaning in your vehicle you should
Release the accelerator
How the rear wheels follow a different track than the front wheels in a turn
Off tracking
When a trailer is resting on a tractor, be sure there is enough clearance between the tractor frame and the
Landing gear
Separators with openings or holes in them, that are between compartments in a tank
Bulkheads
When air tank pressure rises to this level, the governor stops the compressor from pumping air
Cut out
This is not caused by rough acceleration
Tire damage
These control the air in the service line
Hand and foot brake
When pulling more than one trailer, which should be first behind the tractor for safe handling
Heaviest
Much of the loads weight is carried high up off the road
High center of gravity
This device allows air to flow in one direction only
One way check valve
The distance your vehicle travels from the time your eyes see a hazard to the time your brain knows its a hazard
Perception distance
If you use this while driving, you might make the trailer skid
Trailer hand valve
This should not be used while driving on a slippery or wet road or surface
Engine brake
Back and fourth movement of liquid in a tanker
Surging
Test when vehicles air pressure should be built to the maximum pressure and the vehicle is shut off
Applied