TX CDL GENERAL KNOWLEDGE TEST - CDL PRACTICE TEST

31. Which of the following is a common cause of fire?
Improperly sealed cargo.
Short circuits due to loose connections.
Under-inflated tires and duals that touch.
All of the above.
32. When checking the engine compartment:
the parking brake should be on.
wheels should not be chocked.
you should put the gearshift in neutral.
the engine should be running.
33. Hanging meat in a refrigerated truck can be:
a very unstable load with a low center of gravity.
a very stable load with a low center of gravity.
a very unstable load with a high center of gravity.
a very stable load if properly distributed.
34. To avoid becoming distracted while driving, you should:
pre-program your favorite radio stations.
familiarize yourself with your vehicle's features within the first 10 miles of driving.
be careful when reading a text message on your mobiledevice while driving.
All of the above.
35. When driving in work zones you should:
Drive slowly and carefully.
Observe the posted speed limits at all times.
Use your four-way flashers or brake lights to warn drivers behind you.
All of the above.
36. The air compressor governor:
stops the compressor from pumping air.
allows the compressor to start pumping air when the tank pressure rises to the "cut-out" pressure.
controls when the air storage tanks will pump air into the air compressor.
All of the above.
37. Driving at night is _______ driving during the day.
about the same as
more dangerous than
safer than
None of the above.
38. To calculate how much space you should keep in front of you:
count off the seconds until you pass a pavement marking, or some other clear landmark.
count off the seconds from when the vehicle ahead of you passes some clear landmark to when you reach that same landmark.
count off the seconds until you reach the vehicle ahead.
add 4 seconds for each 10 feet of vehicle length at speeds below 40 mph.
39. When driving in heavy traffic, the safest speed is:
the speed of other vehicles, up to the posted limit.
slower than the speed of the traffic.
5 mph below the posted speed limit.
the posted speed limit.
40. Passive railroad crossings:
have at least one traffic control device.
do not have traffic control devices.
should never be crossed using a CMV.
usually have a person directing traffic.
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