Missouri DOR Permit Practice Test 29
- Questions25
- Correct to pass20
- Passing score80%
- Minimum age15 years
-
1. What is the benefit of looking far down the road rather than just ahead of the hood?
Show answer
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.
-
2. Your vehicle has stalled on railroad tracks and no train is in sight. After getting everyone away, whom should you call first?
Show answer
Answer B: The railroad emergency number posted on the blue sign at the crossing, giving the crossing number
Every public crossing has a blue emergency notification sign with a phone number and a crossing identification number. That call lets the railroad stop or slow trains before they reach you.
-
3. You come back to find that your parked car has rolled out into the street. What most likely went wrong?
Show answer
Answer C: The parking brake was not set and the wheels were not turned
The parking brake, a gear or park, and turned front wheels are three separate safeguards, and a runaway means at least the first two were missing.
-
4. How far should the driver chest be from the steering wheel?
Show answer
Answer B: At least about ten inches
The airbag deploys with great force in the first instants of a crash, so about ten inches between your chest and the wheel is the recommended minimum.
-
5. Why is it often safer to back into a parking space than to back out of one?
Show answer
Answer D: Because you leave the space going forward, with a clear view
Backing into the space puts the difficult maneuver where you are stopped and looking around, and lets you drive out facing the traffic and pedestrians.
-
6. A yellow sign shows a truck on a slope with the legend 7 PERCENT GRADE. What should a driver of a heavy vehicle do?
Show answer
Answer A: Select a lower gear before starting down
The percentage shows how steep the descent is, and choosing a low gear at the top lets the engine hold the vehicle back instead of the brakes overheating.
-
7. A driver's destination lies along the street to the right, and this sign stands at that corner. How should the driver reach it?
Show answer
Answer D: By going on and using a later intersection where turning is allowed
When a movement is barred at one corner the driver has to reroute, normally by continuing and coming back to the destination from a permitted approach.
-
8. Why is it risky to brake hard and steer sharply at the same moment?
Show answer
Answer C: The tires have a limited amount of grip that braking and turning must share
Each tire can deliver only so much grip, and asking it to slow the vehicle and change direction at once can exceed that limit and start a skid.
-
9. Your wiper blades smear the windshield instead of clearing it. What should you do?
Show answer
Answer C: Replace the blades, because smearing means that the rubber is worn
Worn or hardened rubber cannot wipe cleanly, and blades are cheap compared with driving without a clear view.
-
10. A sign reads MINIMUM SPEED 40. What does it require of a driver?
Show answer
Answer C: Not to drive below that speed when conditions allow
A minimum speed limit keeps unnecessarily slow vehicles from obstructing traffic, but it never overrides the duty to slow down for weather or congestion.
-
11. Traffic is backed up just past the exit you want to use at a single-lane roundabout. What should you do?
Show answer
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.
-
12. The passenger-side mirror on most vehicles is convex. What does this mean for the driver?
Show answer
Answer D: Vehicles in that mirror are closer than they appear
A convex mirror gives a wider view but shrinks what it shows, so a vehicle looks smaller and therefore farther away than it really is. Allow for this before changing lanes.
-
13. A white arrow painted in your lane points only to the right, and a sign above the lane shows the same movement. What must you do?
Show answer
Answer C: Turn right from that lane
Pavement arrows used with lane-use signs are regulatory, so a driver occupying that lane must make the movement shown.
-
14. Loose gravel has been swept into the middle of your lane on a downhill bend. Which controls are affected most?
Show answer
Answer D: Steering and braking, since the loose stones roll under the tires
Gravel rolls between rubber and pavement, so the tires can neither turn the vehicle nor slow it as they would on a clean surface.
-
15. How should you position your vehicle for a right turn from a two-way street?
Show answer
Answer B: As close as practical to the right curb or edge, then turn into the nearest right lane
Right turns are made from the lane nearest the right edge into the nearest available lane, which keeps the turn tight and prevents a wide sweep into other traffic.
-
16. Snow has covered the pavement markings on a two-lane road. How should a driver judge lane position?
Show answer
Answer B: By the tracks of other traffic and the roadside features
With the markings hidden, ruts left by earlier traffic, signs, poles and the line of the shoulder are the best clues to where the lane runs.
-
17. You are clear of the tracks after your vehicle stalled on a crossing. Whom should you contact?
Show answer
Answer C: The emergency number posted on the blue sign at the crossing, or 911
Grade crossings carry an emergency notification sign with a railroad phone number and a crossing identification number so that approaching trains can be stopped, and 911 works if that sign is not visible.
-
18. A yellow diamond shows a horse with a rider. Besides slowing down, what else should a driver do?
Show answer
Answer C: Avoid using the horn or revving the engine
The equestrian crossing sign warns of horses on or across the road, and a sudden noise can startle an animal into the traffic lane.
-
19. You pass into a work zone with a reduced speed limit but you see no workers. What speed applies?
Show answer
Answer D: The posted work zone limit, whether or not workers are present
A posted work zone speed limit is a regulatory limit in force at all times, and narrow lanes and uneven surfaces remain dangerous when nobody is working.
-
20. A yellow horizontal rectangular sign showing one large arrow pointing left or right, facing traffic on the far side of a sharp bend, tells the driver
Show answer
Answer C: which way the roadway turns at that point
The large arrow sign is mounted on the outside of a sharp change in alignment so that a driver approaching head on immediately sees which way the road goes.
-
21. You must leave your vehicle beside a narrow rural road at night. What should you do?
Show answer
Answer B: Get it right off the pavement and switch on the hazard lights
A vehicle left on an unlit rural road is very hard to see, so move it completely clear of the traveled surface and mark it with the hazard lights.
-
22. What does the solid white line running along the right side of a highway mark?
Show answer
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.
-
23. A freeway sign shows a minimum speed limit. What does it require?
Show answer
Answer B: That you keep up with it unless conditions make that unsafe
A minimum speed limit keeps very slow vehicles off the highway, but weather, traffic or a mechanical problem may make a lower speed necessary and lawful.
-
24. Why is standing water across a road dangerous even when it looks shallow?
Show answer
Answer B: It can hide a washed out roadbed, a deep hole or a missing cover
You cannot see the surface under the water, and floods commonly wash the roadbed away or lift covers off drains.
-
25. At a four-way stop you and an opposing driver arrive together. You are going straight and the other driver is turning left across your path. Who goes first?
Show answer
Answer B: You do, because the left turn crosses your path
When two opposing drivers arrive together, the one going straight goes first and the left-turning driver yields.