CDL PRACTICE TEST - GENERAL KNOWLEDGE (TEXAS)

31. With a dual air brake system:
one system is the main braking system while the other is a back-up system.
each system has its own air tanks, hoses and lines.
each system shares air tanks.
each system shares the same lines and hoses.
32. If you are driving a 30-foot vehicle at 55 mph, you should leave at least _____ between you and the vehicle ahead.
3 seconds
5 seconds
4 seconds
2 seconds
33. Distracted driving may be caused by _________ while driving.
reading billboards
using your smartphone
adjusting the radio
All of the above.
34. In some states, move-over laws require drivers to:
submit to a chemical test to determine their BAC when requested by a peace officer.
obey the directions given by police officers at railroad crossings.
slow and change lanes when approaching a roadside incident.
All of the above.
35. When the spring brakes are on, you should:
not push the brake pedal down.
pump the brakes.
press the accelerator.
exceed the posted speed limit.
36. If you use a CMV to commit a felony involving controlled substances, you will lose your CDL for:
at least 2 years for a first offense.
at least 1 year for a first offense.
life.
at least 3 years for a second offense.
37. Slippery surfaces usually:
make it more difficult to stop.
make it easier to stop.
can cause lack of steering power.
None of the above.
38. If a shipping paper describes both hazardous and non-hazardous products, the hazardous materials must be:
identified by an "H" placed before the shipping description.
listed at the bottom.
written in a larger font.
entered first.
39. How do you put on the parking brake on newer vehicles?
By move a yellow lever to the left.
By pushing in Push in a diamond-shaped yellow knob.
By using a round yellow knob.
By pulling out a diamond-shaped yellow knob.
40. ______ is responsible for the safe operation of a vehicle.
The mechanic
The driver
The vehicle owner
The supervisor
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