District of Columbia DC DMV Permit Practice Test 19
- Questions25
- Correct to pass20
- Passing score80%
- Minimum age16 years
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1. Your vehicle has antilock brakes. What should you never do in an emergency stop?
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Answer A: Pump the pedal up and down
The system already releases and reapplies the brakes many times a second. Pumping the pedal interrupts it and makes the stop longer.
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2. Why does a dirty windshield matter much more at night than during the day?
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Answer C: Dust and streaks scatter oncoming light and increase glare
Film and streaks on the glass spread every oncoming headlight into a star of glare, so clean the inside as well as the outside before a night trip.
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3. A wheel comes off your car while you are driving. What should you do?
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Answer A: Hold the wheel firmly, ease off the gas and steer gently to the shoulder
A firm grip and a gradual slowing keep the vehicle straight, while hard or sudden braking makes a damaged corner pull the car out of line.
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4. The steering suddenly becomes very heavy while you are driving. What has happened and what should you do?
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Answer C: The power steering has failed, so steer with more effort and pull over
Loss of power assistance leaves the steering usable but very heavy. Keep both hands on the wheel, slow gradually and pull off the road to check it.
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5. Which activity does the DC definition of distracted driving expressly cover?
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Answer C: Personal grooming and interacting with pets or unsecured cargo
The DC definition covers inattentive driving caused by reading, writing, personal grooming, interacting with pets or unsecured cargo, or using personal communication technologies.
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6. Is it safe to check your phone while stopped at a red light?
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Answer B: No, you may miss the signal change and hazards around you
Attention does not return instantly when the light changes, and emergency vehicles, pedestrians or a rear-end threat can appear while you are stopped. Stay focused on the road.
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7. What is worth carrying in the vehicle during a winter trip?
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Answer A: A blanket, a flashlight, a scraper and a small shovel
A winter kit keeps you warm and visible if you are stopped for hours, and lets you clear glass and dig the wheels out. Hot water can crack cold glass.
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8. How do extra passengers affect a driver, especially a new one?
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Answer A: They increase the chance of distraction and of crashes
Conversation, laughter and horseplay pull a driver's attention away from the road. Crash risk for young drivers rises with each additional passenger.
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9. You see smoke coming from under the hood while driving. What should you do?
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Answer D: Signal, pull well off the road, shut off the engine and move everyone away from the vehicle
Stopping and shutting off the engine cuts the fuel supply to a possible fire, and distance protects you if it spreads. Raising the hood can feed the fire a rush of air.
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10. You feel fine twenty minutes after your last drink. Why is that a poor guide to driving?
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Answer B: Your blood alcohol level can still be rising
Alcohol keeps being absorbed for some time after the last drink, so a driver who feels able at the door can be more impaired a few miles down the road.
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11. Why is it dangerous to make a left turn from the second lane from the center?
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Answer C: Because a driver in the lane beside you is turning into the same space
Drivers in the proper turn lane are entitled to that space, and turning across them puts two vehicles into one path through the intersection.
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12. A police officer in the intersection raises a hand toward you although your signal is green. What should you do?
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Answer B: Stop and wait for the officer to wave you on
An officer directing traffic overrides signals and signs, and drivers must follow the officer even when the light says otherwise.
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13. You find that your shoulder belt has some slack in it. Why does that matter?
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Answer D: You travel further before the belt restrains you, so injuries are worse
Slack lets your body build up speed before the belt takes hold, which increases the forces on you and the risk of hitting the interior.
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14. In a work zone the temporary lane lines conflict with the old lines still visible on the pavement. Which do you follow?
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Answer C: The temporary markings, which show the current traffic pattern
Temporary markings define the traffic pattern in force, and the old lines are simply the layout that no longer applies.
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15. How far ahead should you normally be looking while driving?
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Answer D: About 12 to 15 seconds of travel ahead
Looking that far ahead, roughly a block in town and much farther on a highway, gives you time to see a problem developing and adjust before it becomes an emergency.
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16. A driver ahead of you extends the left arm straight out horizontally through the window. What is being signaled?
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Answer C: A left turn
The left arm held straight out is the standard hand signal for a left turn.
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17. As a general rule, how far should you travel along a center two-way left-turn lane before you turn?
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Answer C: Only a short distance, just enough to slow down and wait for a gap
The center lane is for making or preparing a left turn, so you enter it only shortly before the turn and never travel along it as a through lane; several states set a specific limit such as 200 or 300 feet.
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18. Traffic in a work zone is down to one lane in each direction, separated by a temporary double yellow line. May you pass?
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Answer C: No, temporary markings prohibit passing just as permanent ones do
A temporary marking has the same legal force as a permanent one, and a work zone is the last place with room to spare for an overtaking vehicle.
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19. What is the benefit of looking far down the road rather than just ahead of the hood?
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Answer A: You steer with smaller corrections and you see trouble in plenty of time
A distant view steadies your steering and gives you time to plan, because you meet hazards after you have already seen them.
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20. At an intersection that uses a lagging left turn, when is the left-turn arrow displayed?
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Answer B: After the through movement has run
A lagging left turn phase runs at the end of the green rather than the start, so a driver waiting to turn should not assume the arrow has been missed.
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21. Why do many crashes happen on routes the driver knows very well?
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Answer D: Familiar roads let attention slip into routine
When a route is automatic the mind wanders and hazards get missed, which is why a well known road deserves the same attention as a strange one.
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22. A NO LEFT TURN sign carries a plaque reading 7 AM TO 9 AM MON TO FRI. What does the assembly mean?
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Answer A: The turn is banned only during those hours on those days
A time plaque limits the restriction to the periods shown, so outside those hours and days the left turn may be made normally.
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23. What makes a left turn protected rather than permissive?
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Answer B: Oncoming traffic is held by a red signal while you have a green arrow
A protected turn is one where the conflicting movements are stopped by their own signal, which is what the green arrow indicates.
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24. When is it appropriate to use cruise control?
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Answer B: On a dry, open highway with light traffic
Cruise control suits steady conditions where you rarely need to change speed. It is a poor choice in traffic, on curves, on slippery roads or when drowsy, because it removes you from the speed decision.
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25. You want to turn right from a lane marked for through traffic and right turns, and the driver behind you wants to go straight. What should you do?
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Answer C: Signal, stay in the lane and make the turn when it is safe
A shared lane is the correct place to turn right from, so signal early and turn from the lane; the driver behind must wait or use another lane.