Combination DPS

Front

Having anti-lock brakes on only your trailer

Back

Will give you more control over the vehicle when braking

Front

The emergency line is what color?

Back

Red

Front

If the service air line comes apart when driving a combination vehicle but the emergency line stays together what will happen right away?

Back

Nothing is likely to happen until you apply the brakes.

Front

When checking the trailer emergency brakes the tractor protection valve should be placed in the _____ position

Back

Emergency

Front

When checking to see if the trailer is securely coupled to the tractor, the landing gear should be: Fully raised, Slightly raised, Fully lowered

Back

Slightly raised

Front

The air leakage rate on a combination vehicle, engine off brakes on should be no more than _____ psi in one minute

Back

Four

Front

Which of these statements is true: The brakes and suspension systems of combination vehicles work best with a light load, light vehicles need more braking power than heavy vehicles to stop, Bobtail tractors can take longer to stop than combination vehicles loaded to maximum gross weight?

Back

Bobtail tractors can take longer to stop than combination vehicles loaded to maximum gross weight.

Front

When couple in the proper position of the fifth wheel is

Back

Tilted down towards the end of the tractor

Front

What gear should the tractor transmission be in after you have uncoupled the trailer and are inspecting the trailer supports?

Back

Neutral

Front

You are coupling a tractor and a semi trailer and have connected the air lines, before backing under the trailer you should: Supply air to the trailer system and then pull out the air supply knob to lock the trailer brakes.

Back

Supply air to the trailer system and then pull out the air supply knob to lock the trailer brakes.