Idaho DMV Permit Practice Test 2026：第4套练习测试

Idaho DMV Permit Practice Test 练习测试第4套（共8套）：再练25道题，附答案和解释。

驾驶
爱达荷州
205道题
核对于2026年10月10日

第1题，共25题
You are in a left-turn lane facing a flashing yellow arrow. What may you do?
- Turn left, because oncoming traffic must stop for you
- Turn left after yielding to oncoming traffic and pedestrians
- Stay stopped until a green arrow appears
- Go straight only
显示答案
答案: B. Turn left after yielding to oncoming traffic and pedestrians
A flashing yellow arrow allows the turn, but you must first yield to oncoming vehicles and to pedestrians in the crosswalk.
第2题，共25题
What is hydroplaning?
- When a tire slowly loses air
- When water gets into your engine
- When your tires ride on a layer of water and lose contact with the road
- When your brakes overheat on a long hill
显示答案
答案: C. When your tires ride on a layer of water and lose contact with the road
At higher speeds on wet roads, tires can ride up on water. You then lose steering and braking control.
第3题，共25题
Car A and Car B reach this intersection, which has no signs or signals, at about the same time. Which car must yield?
- Whichever car is going faster
- Car B
- Neither car; both may go at once
- Car A
显示答案
答案: D. Car A
At an uncontrolled intersection, if two cars arrive together, the driver on the left yields to the driver on the right. Car B is on Car A's right, so Car A must yield.
第4题，共25题
Where are a large truck's blind spots, or No-Zones?
- In front, behind and along both sides
- Trucks have no blind spots because the driver sits up high
- Only on the left side
- Only directly behind it
显示答案
答案: A. In front, behind and along both sides
Large trucks and buses have big blind spots on all four sides. Do not stay in them.
第5题，共25题
Your car goes into deep water and starts to sink. What should you do?
- Stay buckled and wait for help
- Unbuckle and escape through a window
- Open a door right away
- Turn the engine off and on again
显示答案
答案: B. Unbuckle and escape through a window
Get out through a window. Opening a door can let water rush in and roll the car over.
第6题，共25题
What does this sign mean?
- A school crossing guard is ahead
- A flagger is ahead; slow down and follow the flagger's signals
- A pedestrian crossing is ahead
- A parade is ahead
显示答案
答案: B. A flagger is ahead; slow down and follow the flagger's signals
A flagger controls traffic in a work zone with a STOP/SLOW paddle or a flag. Obey the flagger's directions.
第7题，共25题
You are stopped at a red light and want to turn right, as shown. There is no sign about turning. What may you do?
- Turn right after a full stop, yielding to pedestrians and traffic
- Wait for the green light, because turns on red are never allowed
- Turn right without stopping if no one is coming
- Turn right into the farthest lane right away
显示答案
答案: A. Turn right after a full stop, yielding to pedestrians and traffic
Unless a sign or local rule forbids it, you may turn right on red after a full stop, when pedestrians and traffic are clear.
第8题，共25题
You park on a hill where there is no curb. Which way should you turn your front wheels?
- Straight ahead
- Toward the center of the road
- Left if uphill, straight if downhill
- Toward the side of the road (to the right)
显示答案
答案: D. Toward the side of the road (to the right)
With no curb, uphill or downhill, turn your wheels to the right so the car will roll away from traffic if the brakes fail.
第9题，共25题
Besides police cars, which stopped vehicle with flashing lights should you also slow down and move over for?
- A tow truck helping a driver on the shoulder
- A car parked in a driveway
- A delivery van parked at the curb
- A bus at a bus stop with no lights flashing
显示答案
答案: A. A tow truck helping a driver on the shoulder
In many states, Move Over rules also cover tow trucks and highway work vehicles with flashing lights. Giving them space protects the people working beside the road.
第10题，共25题
Where should you stop at this sign if there is a crosswalk but no stop line?
- After the crosswalk, at the edge of the cross street
- Inside the intersection, where you can see best
- Before the crosswalk
- In the middle of the crosswalk
显示答案
答案: C. Before the crosswalk
Stop at the stop line. If there is no line, stop before the crosswalk. If there is no crosswalk, stop before you enter the intersection.
第11题，共25题
Which of these places is unsafe for passing on a two-lane road?
- A flat, open road in daylight with a clear view
- A straight road with a broken yellow line and no oncoming traffic
- A marked passing zone with good visibility
- Near the top of a hill or on a curve where you cannot see ahead
显示答案
答案: D. Near the top of a hill or on a curve where you cannot see ahead
Do not pass near hills or curves where you cannot see oncoming traffic, or near intersections and railroad crossings.
第12题，共25题
What does a flashing yellow traffic light mean?
- Speed up before the light turns red
- Slow down and go through with caution
- Stop and wait for a green light
- The signal is broken, so treat it as an all-way stop
显示答案
答案: B. Slow down and go through with caution
A flashing yellow light is a warning. You may go, but slow down and watch for traffic and pedestrians.
第13题，共25题
Compared with a sober driver, about how much more likely is a driver with a BAC of 0.08% to crash?
- About 20 times
- About the same
- About 4 times
- About 1.5 times
显示答案
答案: C. About 4 times
Drivers at a BAC of 0.08% are about four times more likely to crash than drivers with no alcohol.
第14题，共25题
Which of these is distracted driving?
- Scanning the road ahead
- Eating or changing the music while driving
- Keeping both hands on the wheel
- Checking your mirrors
显示答案
答案: B. Eating or changing the music while driving
Any activity that takes your attention from driving is a distraction, including eating, talking and adjusting the stereo or GPS.
第15题，共25题
Another car is passing you on a two-lane road. What should you do?
- Stay centered in your lane and slow down slightly if needed
- Move toward the center line
- Speed up so the other car cannot pass
- Brake hard
显示答案
答案: A. Stay centered in your lane and slow down slightly if needed
When someone passes you, keep to your lane and ease off slightly so they can get back in safely. Never speed up.
第16题，共25题
What does this sign mean?
- An Interstate highway
- A US highway (US route) number
- A county road
- An exit number
显示答案
答案: B. A US highway (US route) number
The black and white shield marks a numbered US route. These routes often cross several states.
第17题，共25题
You are passing a car. When is it safe to return to your lane?
- As soon as your rear bumper passes its front bumper
- When the two cars are side by side
- When the other driver flashes the headlights
- When you can see the front of the car you passed in your rearview mirror
显示答案
答案: D. When you can see the front of the car you passed in your rearview mirror
Return to your lane only when you can see the whole front of the passed vehicle in your rearview mirror.
第18题，共25题
A driver holds the left arm straight out the window. What does this hand signal mean?
- Right turn
- Left turn
- Slowing down or stopping
- You may pass me
显示答案
答案: B. Left turn
The left arm held straight out means a left turn.
第19题，共25题
While you wait to turn left, why should you keep your front wheels pointed straight ahead?
- To keep your tires from wearing out
- So your turn signal keeps working
- So you can turn faster when the way is clear
- So you are not pushed into oncoming traffic if you are hit from behind
显示答案
答案: D. So you are not pushed into oncoming traffic if you are hit from behind
Keep your wheels straight until it is safe to turn. If your wheels are turned and someone hits you from behind, you could be pushed into oncoming cars.
第20题，共25题
What does this sign mean?
- Stop here
- The road ends ahead
- A traffic signal is ahead
- A STOP sign is ahead; be ready to stop
显示答案
答案: D. A STOP sign is ahead; be ready to stop
This sign warns of a STOP sign that may be hard to see. Slow down and get ready to stop.
第21题，共25题
What does this sign mean?
- The center lane is only for left turns by traffic from both directions
- The center lane is a passing lane
- The left lane must turn left
- Two lanes may turn left
显示答案
答案: A. The center lane is only for left turns by traffic from both directions
Use the shared center lane only to slow down and turn left. Never use it to pass or to travel a long way.
第22题，共25题
A front tire blows out while you are driving on the highway. What should you do?
- Hold the wheel tightly and slowly ease off the gas
- Brake hard right away
- Speed up to keep control
- Steer sharply onto the shoulder
显示答案
答案: A. Hold the wheel tightly and slowly ease off the gas
Grip the wheel firmly, keep the car straight, and let it slow down before you brake gently and pull off.
第23题，共25题
The lights are flashing at a railroad crossing. Where should you stop?
- Right next to the rail
- At least 15 feet but no more than 50 feet from the nearest rail
- At least 200 feet before the tracks
- On the tracks, so you can see better
显示答案
答案: B. At least 15 feet but no more than 50 feet from the nearest rail
Stop between 15 and 50 feet from the nearest rail, and wait until the train has passed and it is safe.
第24题，共25题
What does a steady yellow light mean?
- Speed up to get through before it turns red
- The light is about to turn red, so stop if you can do it safely
- Only pedestrians may move now
- The intersection is clear, so go
显示答案
答案: B. The light is about to turn red, so stop if you can do it safely
A steady yellow light warns that the green is ending and red is coming. Stop if you can do so safely.
第25题，共25题
What does this sign mean?
- A toll road
- A US highway route
- A route on the Interstate highway system
- A state park road
显示答案
答案: C. A route on the Interstate highway system
The red, white and blue shield marks an Interstate highway route.

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