District of Columbia DC DMV Permit Practice Test 18
- Questions25
- Correct to pass20
- Passing score80%
- Minimum age16 years
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1. In heavy fog at night on a rural two-lane road, which marking best helps a driver hold position?
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Answer C: The solid white line along the right edge
Steering by the right edge line keeps a driver clear of oncoming traffic, while watching the center line tends to pull the vehicle toward it.
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2. The vehicle you have borrowed is larger and heavier than your own. How should you drive it?
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Answer B: Allow more room for stopping and for turns until you are used to it
Extra weight and length mean longer stopping distances and wider turns, so give yourself more room until you are used to it.
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3. What is the safest way to deal with the situation this sign announces?
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Answer B: Match the speed of the other traffic stream and open a gap so vehicles can blend without hard braking
Blending works when speeds are matched and gaps are opened, so nobody has to brake hard or swerve where the two streams come together.
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4. What does the solid white line running along the right side of a highway mark?
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Answer A: The right edge of the traveled way
A solid white edge line shows where the traveled way ends on the right, which is particularly useful at night and in poor visibility.
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5. You hold steady pressure on the brake pedal for the whole of a long descent. What is likely to happen?
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Answer B: The brakes overheat and fade, so they slow you less and less
Continuous braking heats the brakes until they fade and lose effectiveness; use a lower gear and short, firm applications instead.
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6. Your loaded vehicle weighs more than the figure shown on a posted weight limit sign. What must you do?
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Answer D: Find another route, because crossing is not permitted
A posted weight limit is a legal maximum, not advice, so an overweight vehicle has to take a different route.
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7. When should you arrange your way home if you plan to drink?
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Answer C: Before the first drink
Judgment is the first thing alcohol weakens, so the plan has to be made while you can still make a good one.
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8. You are entering a freeway using an on-ramp with an acceleration lane. What is the correct technique?
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Answer C: Use the acceleration lane to reach the speed of traffic, then merge into a gap while yielding to traffic already on the freeway
The acceleration lane exists so you can match the speed of freeway traffic before merging, and drivers already on the freeway have the right-of-way.
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9. Why is passing on a curve prohibited even when the traffic seems light?
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Answer C: You cannot see far enough around it to know the lane is clear
A pass is only as safe as the distance you can see, and a curve hides the very lane the maneuver uses.
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10. A sign beside the signal reads STOP HERE ON RED. What does it tell you?
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Answer B: Stop at that point on red, not closer to the intersection
The sign marks the required stopping point, which is set back from the corner so that turning vehicles and sight lines are not blocked.
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11. You are backing a trailer and want its rear to move to the left. Which way should you turn the steering wheel?
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Answer A: Move the bottom of the wheel to the left, which turns the top to the right
A trailer moves opposite to the tow vehicle's steering when backing. Holding the wheel at the bottom and moving your hand in the direction you want the trailer to go makes this easier.
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12. A sign with a black legend on a fluorescent pink background is used for
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Answer A: traffic incident management
Fluorescent pink is set aside for signing that manages traffic around a crash, a spill or another unplanned incident, so it stands apart from routine work zone orange.
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13. A yellow diamond showing the silhouette of a deer warns that
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Answer D: large animals may cross the road in that area
The sign marks a stretch where animals are known to cross, so drivers should reduce speed and scan both roadsides, especially around dawn and dusk.
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14. During the school year, how late may a 16- or 17-year-old DC provisional license holder drive on Friday and Saturday?
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Answer C: Until 11:59 p.m.
On Friday and Saturday nights during the school year the limit moves to 11:59 p.m.
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15. How should a head restraint be adjusted?
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Answer D: So the top is at least as high as the back of your head and close behind it
A restraint set at head height and close behind limits how far the head snaps backward in a rear impact, which is what reduces neck injury.
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16. What can a loose or doubled up floor mat on the driver side cause?
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Answer A: It can slide forward and trap the accelerator pedal down
An unsecured mat, or a second mat laid over the first, can slip forward and hold the accelerator open. Use the mat clips and never stack mats.
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17. You arrive at an intersection where the traffic signal is completely dark because of a power failure. How should you proceed?
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Answer C: Treat the intersection as an all-way stop
When a signal shows no indication at all, drivers on every approach must stop and then take turns, exactly as at an all-way stop.
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18. You are approaching a sharp curve. When should you reduce your speed?
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Answer D: Before you enter the curve, so you can accelerate gently through it
Braking hard inside a curve uses up the traction that is already being demanded for cornering, so the slowing must be finished before you enter.
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19. When should you move into the lane you need for a turn?
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Answer D: Well before the intersection, as soon as you know your route
Getting into the correct lane early lets other drivers read your intentions and keeps you from making a sudden lane change at the corner.
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20. Who must accompany a DC learner permit holder arriving for the road skills test?
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Answer C: A licensed driver aged 21 or older
The applicant must be accompanied by a licensed driver who is at least 21 years old.
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21. A sign on a freeway restricts trucks to the two right-hand lanes. What should a car driver expect in those lanes?
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Answer A: More heavy vehicles and slower changes of speed
A truck lane restriction concentrates heavy vehicles on the right, and those vehicles accelerate, brake and change lanes far more slowly than cars.
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22. What is the maximum lawful speed on a District street where no other speed is posted?
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Answer A: 20 mph
Unless a sign says otherwise, the maximum lawful speed on District streets and highways is 20 mph.
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23. The light ahead is green, but traffic beyond the intersection is backed up so far that you could not clear it. What is the correct action?
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Answer D: Wait behind the stop line until there is room on the far side
Entering an intersection you cannot clear blocks cross traffic and pedestrians, so you should hold your position until space opens on the other side.
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24. You enter a corner faster than the turn can be taken. What is the most likely result?
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Answer A: The vehicle runs wide and may cross into another lane
Excess speed uses up the available grip, so the vehicle follows a wider arc than intended and drifts out of its lane.
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25. You will leave your vehicle for several hours after dark. Where is the best place to park it?
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Answer D: In a well-lit spot with people and cameras nearby
Light, passing people and cameras all discourage theft and make your own return to the vehicle safer.