District of Columbia DC DMV Permit Practice Test 24
- Questions25
- Correct to pass20
- Passing score80%
- Minimum age16 years
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1. How does DC treat a driver who holds up traffic by driving unreasonably slowly?
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Answer B: It is a moving infraction with its own fine
DC regulations set a minimum speed provision, and driving too slowly is ticketed as a moving infraction in its own right.
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2. A stop sign at a busy corner has a stop line and a crosswalk, but buildings block your view of the cross street. What is the correct sequence?
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Answer C: Stop at the line first, then edge forward and stop again to see
The first stop is required at the line or before the crosswalk, and a second stop farther forward is what actually lets you yield safely.
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3. How does higher speed affect the outcome of a crash?
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Answer A: It leaves less time to react and greatly increases the force of impact
Speed shortens the time available to avoid a hazard and raises the energy released in an impact, so both the likelihood and the severity of a crash increase.
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4. The low sun is directly ahead and glare makes it hard to see. What should you do?
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Answer C: Slow down, use the sun visor or sunglasses, and increase following distance
Sun glare can hide pedestrians, brake lights and signals. Reducing speed and adding space gives you time to react to what you cannot yet see.
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5. Why should you not switch the engine off while the vehicle is still moving fast?
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Answer B: You lose power steering and the steering may lock
With the engine off the steering becomes very heavy and on many vehicles the column can lock, so shift to neutral first and only shut down once stopped.
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6. Your vehicle stalls on railroad tracks and you see a train approaching. What should you do?
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Answer D: Get everyone out and run toward the train at an angle away from the tracks
Leave the vehicle at once. Running toward the oncoming train and away from the tracks keeps you clear of the wreckage, which is thrown forward in the direction the train is moving.
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7. A line beside your lane is painted about twice the normal width. What does the extra width convey?
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Answer B: Greater emphasis on the restriction it carries
Width is part of the marking code: a wide line carries more emphasis than a normal one, which is why it is used at gores and channelizing lines.
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8. You are turning left from a one-way street onto another one-way street. Which lane should you use?
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Answer B: Turn from the far left lane into the far left lane of the new street
The general turning rule is to turn from the lane nearest the direction of the turn into the nearest lane of the new roadway, which on a one-way to one-way left turn means far left to far left.
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9. You want to move into the right lane just as an entrance ramp joins the highway at that point. What is the better choice?
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Answer B: Wait until you are past the merge area so you do not squeeze the entering traffic
The merge area is where ramp traffic has to find a gap, so adding a lane change of your own into the same space creates a conflict.
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10. The lane you are in has a right-turn-only arrow painted on the pavement. What must you do?
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Answer C: Turn right, because a lane-use arrow is a legal requirement
Lane-use arrows painted on the pavement are regulatory markings, so a driver in that lane must travel in the direction shown.
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11. It is dusk and a jogger in dark clothing is running along the edge of the road. What should you do?
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Answer D: Slow down and scan the edges of the road
Dusk is the hardest light for spotting people, and dark clothing removes most of your warning, so lower speed and a careful scan of the roadsides are the answer.
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12. An angry driver is following you closely and gesturing at you. What is the safe response?
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Answer B: Drive to a police station or to a busy public place and call for help
Never stop to confront an aggressive driver and never lead one home; go somewhere public and get the police involved.
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13. A center lane is bordered by a solid yellow line on the outside and a broken yellow line on the inside, with turn arrows painted inside it. What is that lane for?
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Answer C: Left turns made by traffic traveling in either direction
That marking pattern identifies a two-way left-turn lane, which drivers approaching from both directions may use to prepare for a left turn.
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14. How does alcohol change the time a driver needs to respond to a hazard?
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Answer A: It slows it, so stopping takes longer
Alcohol is a depressant that lengthens the time between seeing a hazard and acting on it, which adds directly to the distance needed to stop.
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15. What are painted curb markings mainly used for?
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Answer D: Conveying parking and stopping regulations
Colored curbs tell drivers where waiting or parking is restricted, and because the exact color meanings are set locally a driver should also read the posted signs.
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16. How can you check that you are keeping a safe following distance?
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Answer A: Count at least three seconds between the vehicle ahead passing a fixed object and your reaching it
Pick a fixed roadside object, start counting when the vehicle ahead passes it and make sure at least three seconds elapse before you reach it, adding more time in poor conditions.
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17. You are about to drive a rental car that you have never driven before. What should you do?
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Answer A: Adjust the seat and the mirrors and find the controls before moving off
Hunting for the wipers or the lights in traffic is a distraction, so learn the layout while the vehicle is stopped.
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18. A sign with a green background and a white legend normally provides
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Answer A: directions, distances and destinations
Green is the background color of the guide sign series, which names routes and destinations and gives the distance to them.
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19. Traffic is backed up just past the exit you want to use at a single-lane roundabout. What should you do?
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Answer D: Wait at the yield line until you can pass through and exit
You must not enter a roundabout unless you can clear it, because stopping inside blocks every other entry.
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20. A yellow diamond shows an arrow that doubles back on itself. What kind of curve lies ahead?
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Answer C: A turn of 135 degrees or more, nearly doubling back
The hairpin curve sign is used where the road changes direction by 135 degrees or more, and it is normally backed up by chevrons or a large arrow through the bend.
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21. For how long is a DC driver license revoked after a first driving under the influence conviction?
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Answer C: 6 months
DC DMV revokes the license for 6 months on a first DUI conviction and adds 12 points to the record.
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22. When is switching traction control off sometimes useful?
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Answer A: When you need spinning wheels to rock out of deep snow or mud
Rocking a stuck vehicle free needs the wheel spin that the system normally prevents. Switch it back on as soon as you are moving again.
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23. You have a green light and are turning right while people are crossing the street you want to enter. Who goes first?
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Answer B: The pedestrians, and you wait until they are clear of your path
A green light permits the turn but does not remove the duty to yield to pedestrians already crossing the street you are turning into.
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24. You want to reverse direction but the street is too narrow for a U-turn. What is the alternative?
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Answer D: Make a three-point turn, or go around the block in heavy traffic
Where there is not enough width for a U-turn, the three-point turn does the job in stages, and on a busy street going around the block is safer still.
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25. In slow summer traffic the temperature gauge climbs into the red. What should you do first?
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Answer A: Turn off the air conditioner and turn on the heater to draw heat from the engine
The heater core acts as an extra radiator, and shutting off the air conditioner reduces engine load. If the gauge keeps climbing, pull over and shut off the engine, and never open a hot radiator cap.