Tennessee TDOSHS Permit Practice Test 30
- Questions30
- Correct to pass24
- Passing score80%
- Minimum age15 years
-
1. What should you do before leaving a parked vehicle unattended?
Show answer
Answer C: Set the parking brake, place the transmission in park or in gear, switch off the engine and take the key
Securing the vehicle with the parking brake, the transmission and the ignition prevents it from rolling away and from being moved by someone else.
-
2. What does a traction control system do?
Show answer
Answer A: It limits wheel spin when you accelerate
Traction control cuts power or brakes a spinning wheel so the tires can grip when you pull away or accelerate on a slippery surface.
-
3. You stop at a rest area because you are sleepy. How long a nap is usually recommended?
Show answer
Answer D: About fifteen to twenty minutes
A short nap of fifteen to twenty minutes restores useful alertness without leaving the grogginess a longer sleep can bring, and you should wait a few minutes before driving on.
-
4. What happens to your field of vision as your speed increases?
Show answer
Answer C: It narrows, so you notice less at the sides of the road
The faster you travel, the more your useful field of view narrows toward the center, so a hazard coming from the side is seen late or missed altogether.
-
5. How should the outside mirrors be aimed to reduce your blind spots?
Show answer
Answer A: Outward, so each one covers the lane beside you rather than repeating the inside mirror
Mirrors aimed too far inward show you the same road three times and leave a large gap beside the vehicle, so aiming them outward shrinks the blind spot.
-
6. A driver who has been drinking has two cups of strong coffee. What has changed?
Show answer
Answer D: The driver is more awake but just as impaired
Coffee can make a drinker feel alert, but nothing except time removes alcohol from the blood, so a wide awake drinker is still an impaired driver.
-
7. May you park across the entrance to a fire station?
Show answer
Answer D: No, an emergency exit must never be blocked
Emergency vehicles must be able to leave the moment a call comes in, so their entrances and exits are kept clear at all hours.
-
8. How does driving on overinflated tires affect the vehicle?
Show answer
Answer D: It gives a harsher ride and a smaller contact patch
An overinflated tire bulges in the middle, so less rubber touches the road, grip suffers and the ride becomes hard. The center of the tread wears first.
-
9. A driver ahead of you extends the left arm straight out horizontally through the window. What is being signaled?
Show answer
Answer C: A left turn
The left arm held straight out is the standard hand signal for a left turn.
-
10. A NO LEFT TURN sign carries a plaque reading 7 AM TO 9 AM MON TO FRI. What does the assembly mean?
Show answer
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.
-
11. The center line beside your lane is a broken yellow line. What does it allow?
Show answer
Answer D: You may cross into the opposing lane to pass when it is safe and clear
A broken yellow center line marks a passing zone where traffic in that direction may cross into the opposing lane to pass when the way ahead is clear.
-
12. You are approaching an uncontrolled intersection on a residential street where parked cars hide the cross street. What is the correct approach?
Show answer
Answer B: Slow enough to stop and creep out until you can see
Without a sign or signal you still have to be able to yield, and you cannot yield to traffic you have not seen.
-
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. What is the safest way to leave a perpendicular parking space in a busy lot?
Show answer
Answer B: Back out slowly, checking both ways and yielding
Backing out gives you the poorest view of any maneuver, so it must be done slowly, with checks in both directions and with yielding to whoever is already there.
-
15. A single solid white line separates two lanes running in the same direction. What is it telling drivers?
Show answer
Answer A: Changing lanes there is discouraged
A solid white lane line discourages lane changing, typically where merging or weaving would create a hazard.
-
16. You reach a four-way stop after another driver has already stopped there. What should you do?
Show answer
Answer D: Let the driver who stopped first proceed before you go
At a four-way stop the vehicles proceed in the order they arrived, so a driver who stopped before you goes first.
-
17. Your vehicle does not have antilock brakes and you must stop quickly on a slippery road. What is the correct technique?
Show answer
Answer B: Apply the brakes firmly without locking the wheels, releasing slightly if they lock
Locked wheels slide and cannot steer. Squeezing the brakes to just short of lockup, and easing off if they lock, gives the shortest stop with control.
-
18. On a long uphill grade a second lane opens on the right and a sign directs slower traffic into it. You are towing a trailer and holding up a line of vehicles. What should you do?
Show answer
Answer A: Move into the right-hand lane and let the faster traffic use the left lane
A climbing lane exists so that slow vehicles can be passed safely, and the slower vehicle is the one that belongs in it.
-
19. Why is the road often most slippery during the first few minutes of rain after a long dry spell?
Show answer
Answer C: Oil and dust on the surface mix with the water into a slick film
Oil drippings and road dust build up on dry pavement, and the first light rain lifts them into a slippery film before heavier rain washes it away.
-
20. You are in the open lane where another lane is merging into yours. What is your part in the merge?
Show answer
Answer A: Keep a steady speed and leave a gap for one vehicle to come in
A merge works when each driver in the through lane lets one vehicle in, which keeps both lines moving instead of stopping them both.
-
21. How can you tell that a child safety seat is installed tightly enough?
Show answer
Answer C: It moves less than an inch side to side or front to back at the belt path
A correctly installed seat is nearly immovable where the belt or lower anchors pass through it. Excess movement lets the child's body travel farther in a crash.
-
22. You have stopped on an uphill grade close behind a large truck at a traffic signal. What is the risk?
Show answer
Answer B: The truck may roll back into you when it starts to move
Heavy vehicles can roll backward a short distance when the driver moves from the brake to the accelerator on a hill. Leave extra room when stopped behind a truck on a grade.
-
23. Besides the point limit, what other record conditions does Tennessee attach to reaching the Intermediate Unrestricted License?
Show answer
Answer A: No at-fault crash and no more than 2 seat belt violations
Advancing to the unrestricted stage also requires that the teen have no at-fault traffic crashes and no more than 2 seat belt violations on the record.
-
24. You are driving slower than the general flow on a multilane highway. Which lane should you use?
Show answer
Answer D: The right lane, keeping the left lanes free for faster traffic and passing
Slower traffic must keep right so that faster vehicles and overtaking traffic can use the left lanes without weaving between lanes.
-
25. You see a shield for a three-digit Interstate whose first digit is even. What does that tell you about the route?
Show answer
Answer C: It loops around a city and rejoins its parent route
A three-digit Interstate beginning with an even digit is a loop or beltway that connects back to the main route at both ends, while an odd first digit marks a spur.
-
26. How does being tired change your total stopping distance?
Show answer
Answer A: It lengthens it, because you take longer to notice and react
Fatigue stretches perception and reaction time, and every extra fraction of a second is added distance before the brakes even begin to work.
-
27. You are in the right-hand of two left-turn lanes and the vehicle beside you starts to drift toward your lane during the turn. What should you do?
Show answer
Answer B: Slow slightly, keep to your own lane and give the other vehicle room
Drivers commonly drift wide in dual turn lanes, so hold your own line, ease off and leave space rather than racing or crowding the other vehicle.
-
28. A curb sign reads 2 Hour Parking, 8 AM to 6 PM, Monday to Saturday. When may you stay longer than two hours?
Show answer
Answer A: Outside those hours and on Sundays
A time limit applies only during the days and hours printed on the sign; outside them the ordinary parking rules apply.
-
29. You are in the acceleration lane and the gap you were aiming for is now beside you. What is the best adjustment?
Show answer
Answer A: Change your speed a little to line up with a gap, then merge smoothly
The acceleration lane is for matching both the speed and the position of a gap, and small speed adjustments are what line the two up.
-
30. Your light turns green, but a vehicle is still in the middle of the intersection. What should you do?
Show answer
Answer D: Wait until the intersection is clear before you move ahead
A green light means go only when the way is clear. Drivers already inside the intersection must be allowed to finish crossing.