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COLORADO DOUBLES TRIPLES PRACTICE CDL TEST

11. When transporting cargo, cargo securement must be checked within the first _____ miles of a trip and every _____ miles after.
100; 150
50; 150
150; 250
50; 250
12. What can cause poor traction?
Too much weight on the steering axle.
Too little weight on the driving axles.
Overloading the truck.
All of the above.
13. Combination vehicles usually require _________ single commercial vehicles.
the same level of skill as
less driving skill than
more driving skill than
None of the above.
14. When coupling double trailers, you can secure the second trailer by:
chocking the wheels.
using the trailer spring brakes.
setting the trailer emergency brakes.
All of the above.
15. In newer vehicles with air brakes, you put on the parking brake:
using a diamond-shaped, yellow, push-pull control knob.
placing the transmission in Park.
using a P-shaped, yellow control knob.
moving the orange push-pull lever to the right.
16. In vehicles with air brakes, the two markings on a front brake limiting valve are:
normal and slippery.
left and right.
high and low.
wet and dry.
17. When backing, it is best to:
try to back in the direction of the drift.
use a helper whenever possible.
back toward the passenger's side when possible.
use only the passenger's side mirror.
18. Glad hands are:
warning devices.
securement devices.
coupling devices.
electronic devices.
19. If you must stop on a one-way or divided highway, place your warning devices:
50 feet, 100 feet, and 150 feet toward the approaching traffic.
10 feet, 100 feet, and 200 feet toward the approaching traffic.
100 feet, 200 feet, and 300 feet toward the approaching traffic.
10 feet, 50 feet, and 150 feet toward the approaching traffic.
20. Alcohol:
improves muscle coordination.
improves reaction time.
impairs depth perception.
does not affect judgement.
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