FREE South Dakota CDL Doubles & Triples Practice Test (2024)

1. After the pre-trip inspection, drivers should inspect their cargo and its securing devices again within ________ after beginning the trip.

2. Drivers transporting cargo are responsible for:

inspecting the cargo.
making sure the cargo is properly secured.
recognizing overloads.
All of the above.

3. Foundation brakes are used:

4. Rims with welding repairs:

can be used for tires in the rear of the vehicle.
are not safe.
can be used for tires in the front of the vehicle.
are acceptable only when carrying a heavy load.

5. When driving in extremely hot weather, if the air pressure in the tires is too high, you should:

call your supervisor.
let air out of the tires to decrease pressure.
continue driving.
stop and remain stopped until the tires cool off.

6. On any upgrade, _________ – the more you will have to use lower gears to climb hills or mountains.

7. You are driving a double. Before entering traffic, you should:

make sure you have a large enough gap before entering or crossing traffic.
assume there is enough room to merge into traffic.
always come to a complete stop.
turn on your headlights.

8. Most heavy duty vehicles use ___ air brake systems for safety.

9. When parked on the side of the road, you should:

use the 4-way emergency flashers.
activate the right turn signal.
flash your brake lights.
turn off all lights.

10. "Bobtail" tractors are:

heavily loaded trailers.
tractors with two trailers.
tractors with a tank.
tractors without semitrailers.

CDL DOUBLES TRIPLES PRACTICE TEST SOUTH DAKOTA