CDL PRACTICE TEST - GENERAL KNOWLEDGE (MARYLAND)

41. Hydroplaning is more likely if:
tire pressure is low.
tire tread is worn.
the road is wet.
All of the above.
42. Your vehicle has hydraulic brakes. When you press the brake pedal while driving and the pedal goes to the floor, remember that:
pumping the brake pedal may generate enough hydraulic pressure to stop the vehicle.
the parking brake should never used to slow the vehicle.
shifting into neutral may help slow the vehicle.
All of the above.
43. Most heavy vehicles require ________ change gears.
triple shifting
double clutching
single clutching
double shifting
44. The first thing to do at an accident scene is to:
care for the injured.
gather information.
keep another accident from happening.
notify authorities.
45. Which of the following is considered a serious traffic violation?
Following a vehicle too closely
Excessive speeding (15 mph or more above the posted limit)
Reckless driving
All of the above
46. Texting is:
the most dangerous distraction.
about as safe as adjusting the radio.
safer than  engaging in conversation with a passenger.
safer than talking on a cell phone.
47. Escape ramps:
have been built to stop runaway vehicles on steep downgrades.
can only be used by trucks or passenger vehicles.
are used to safely leave the highway.
All of the above.
48. Placards must be placed:
on the front only.
on the driver's side of the vehicle.
on the rear only.
on the front, rear and both sides of the vehicle.
49. Empty trucks require greater stopping distances. True or False?
True.
True, but only on wet surfaces.
False, but only for trucks built on or after March 1, 1998.
False.
50. After a tire has been changed, you should:
decrease tire pressure.
wait at least 30 minutes before driving.
stop a short while later and check that the nuts are tight.
deflate the tire to 15 psi.
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