District of Columbia DC DMV Permit Practice Test 45
- Questions25
- Correct to pass20
- Passing score80%
- Minimum age16 years
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1. What does it mean to cover the brake, and when should you do it?
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Answer B: Hold your foot over the brake pedal without pressing it when a hazard seems likely
Covering the brake cuts reaction time when you expect trouble, such as near children, parked cars or a vehicle that may pull out. Riding the brake wears it out and confuses drivers behind you.
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2. The sun is low behind you and shining into the eyes of oncoming drivers. What should you do?
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Answer C: Turn on your headlights and expect oncoming drivers not to see you
Drivers facing the low sun may not see you at all, so make yourself as visible as possible and give way rather than insisting on your right of way.
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3. You are following a large truck on a two-lane road and cannot see past it. What should you do before deciding to pass?
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Answer D: Drop back so that your view of the road ahead opens up
Distance is what buys you a view around a large vehicle, and no decision to pass can be made from a position where you cannot see.
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4. Why is repeatedly changing lanes to work through heavy traffic a poor idea?
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Answer A: It raises the crash risk and saves almost no time
Each lane change adds a conflict with another vehicle, and in congestion the lanes move at similar average speeds, so the gain is negligible.
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5. A broken white line separates your lane from the lane on your right. What does it permit?
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Answer C: Changing lanes when it is safe to do so
A normal broken white line marks a boundary between lanes traveling the same way that road users may cross when it is safe.
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6. Heavy rain has left standing water on the road where this sign is posted. What does the law expect of the driver?
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Answer C: Driving below the posted figure, at a speed that suits the conditions
Drivers must adapt to conditions, so in rain, fog, snow or dense traffic the safe speed falls below the posted maximum and keeping to that maximum can itself be an offense.
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7. A hands free phone conversation is which kind of distraction?
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Answer C: Cognitive, because your mind leaves the road
Hands free equipment removes the manual and visual parts of a call but not the mental load, and it is the mental load that makes a driver miss hazards.
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8. An orange sign reads RIGHT LANE CLOSED AHEAD. What is the correct response?
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Answer A: Move left in good time and keep a steady pace
The sign is placed well before the taper so that drivers can merge smoothly rather than braking hard where the lane actually closes.
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9. You are driving on an open highway in a strong crosswind. What is the safest adjustment?
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Answer A: Reduce speed and keep a firm grip, expecting gusts on bridges and beside large vehicles
Gusts hit hardest in open gaps, on bridges and when passing high-sided vehicles, so a lower speed and a firm grip let you correct before you are pushed out of your lane.
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10. Which headlight setting should you use in dense fog?
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Answer B: Low beams
High beams reflect off the water droplets in fog and bounce glare back at you, while low beams aim downward and light the road without that mirror effect.
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11. Is it a good idea to shift into neutral and coast down a long hill to save fuel?
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Answer B: No, you lose engine braking and some control of the vehicle
In neutral the engine cannot help slow the vehicle, so the brakes do all the work and can overheat. Stay in gear so the drivetrain helps hold your speed.
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12. In near freezing weather, which part of an otherwise clear road is most likely to still be icy?
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Answer D: A shaded dip under trees or beside a rock cut
Sun clears most of the road, but shaded hollows never warm up and can hold ice long after the rest of the pavement is dry.
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13. The brake warning light stays on even though the parking brake is fully released. What does it indicate?
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Answer B: A possible brake system problem, so have the brakes checked promptly
The brake warning light also signals low brake fluid or a failure in one part of the hydraulic system. Do not ignore it, because braking may be reduced.
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14. On traffic control devices, the color green shows direction to a destination and also shows
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Answer C: that a movement is permitted
Green carries two assignments: guidance toward destinations, and the idea that the movement shown is allowed, as on a green arrow.
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15. A power line has fallen across your vehicle after a crash. What should you do?
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Answer C: Stay inside and wait for utility workers unless fire forces you out
The vehicle body may be energized, and touching it and the ground at the same time can be fatal. If you must leave because of fire, jump clear with both feet together and shuffle away.
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16. Why does safety guidance say a child should ride in the back seat rather than in front of an active passenger airbag?
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Answer D: Because the airbag inflates with enough force to injure a small child badly
Airbags deploy at very high speed and are sized for adults, so a child seated close to one can be badly hurt by the bag itself, which is why the back seat is recommended for children.
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17. How much clear road do driver manuals say you need before starting a pass at highway speed on a two-lane road?
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Answer C: Enough to complete the pass and return, roughly ten to twelve seconds of travel
At highway speed the whole maneuver of pulling out, overtaking and returning takes roughly ten to twelve seconds, and every foot of that has to be visible before you start.
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18. A SHOULDER DROP OFF sign warns that
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Answer B: there is a step down from the pavement to the shoulder
The sign is used where the edge of the pavement stands several inches above the shoulder, which can grab a wheel and pull the vehicle sideways.
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19. What should you do about snow and ice on your vehicle before driving?
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Answer C: Clear all glass, mirrors and lights, and the roof and hood as well
Snow left on the roof or hood slides onto your windshield when you brake and blows into the path of drivers behind you, and covered lights make your vehicle hard to see.
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20. How should you follow a school bus in traffic?
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Answer A: Far enough back to see its lights and stop in time
A school bus stops often and with little warning, so a longer following distance gives you time to see the lights come on and stop clear of it.
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21. Yellow signs each showing one large black arrowhead, installed in a row along the outside of a curve, are
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Answer D: chevron alignment signs marking the change of direction of the curve
Chevron alignment signs are placed on the outside of a curve so that several are in view at once, letting the driver judge how sharply the road turns.
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22. How long do points remain on a DC driving record?
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Answer A: Two years
DC DMV keeps assessed points on the driving record for two years.
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23. You have started to pass and you see the no-passing zone beginning ahead. What should you do?
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Answer D: Ease off, drop back and return to your own lane
A pass must be completed before the no-passing zone starts. If it will not fit, abandon it and slot back in behind.
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24. You are on an entrance ramp joining a busy freeway. What should you do with your speed in the acceleration lane?
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Answer D: Build it up to about the speed of the traffic you are joining
Merging works when your speed matches the traffic stream, because a large speed difference forces the drivers already on the freeway to brake or swerve.
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25. A driver stopped on suspicion of impaired driving refuses to take a chemical test. What happens?
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Answer D: A license penalty follows for the refusal itself
Under implied consent, holding a license means agreeing to testing, so a refusal brings its own suspension separately from anything the court decides.