Iowa DOT Permit Practice Test 2026: Test de práctica 5

Test de práctica 5 de 8 de Iowa DOT Permit Practice Test: 25 preguntas más con respuestas y explicaciones.

Conducir
Iowa
205 preguntas
Revisado el 10 de octubre de 2026

Pregunta 1 de 25
Why should you never try to beat a train to a crossing?
- A train cannot stop quickly; at 60 mph it may need a mile or more
- Trains must yield to cars at crossings
- Train engineers can steer around cars
- Trains always slow down at crossings
Ver respuesta
Respuesta: A. A train cannot stop quickly; at 60 mph it may need a mile or more
Trains are very heavy and need a long distance to stop. A train at 60 mph may take a mile or more.
Pregunta 2 de 25
What should you do when you see this sign?
- Turn right only on a green light
- Do not turn right; go straight or turn left if allowed
- Yield to vehicles turning right
- Turn right after a full stop
Ver respuesta
Respuesta: B. Do not turn right; go straight or turn left if allowed
The black arrow shows the move and the red circle and slash forbid it. You may not turn right at this intersection.
Pregunta 3 de 25
What does this sign mean?
- Right turns only
- The right lane ends
- A side road joins from the right
- A sharp turn to the right is ahead; slow down a lot
Ver respuesta
Respuesta: D. A sharp turn to the right is ahead; slow down a lot
A sharp turn needs a much lower speed than a gentle curve. Look for a yellow speed plate under the sign.
Pregunta 4 de 25
If you double your speed, about how much longer does it take to stop once you brake?
- About the same distance
- About half as far
- About four times as far
- About twice as far
Ver respuesta
Respuesta: C. About four times as far
Braking distance grows with the square of speed, so doubling your speed makes it about four times longer.
Pregunta 5 de 25
You are entering a freeway from an on-ramp, as shown. What should you do in the acceleration lane?
- Merge right away without checking traffic
- Drive slowly so freeway drivers notice you
- Speed up to match freeway traffic, then merge into a safe gap
- Stop at the end of the ramp and wait for a big gap
Ver respuesta
Respuesta: C. Speed up to match freeway traffic, then merge into a safe gap
Use the acceleration lane to reach the speed of traffic, check mirrors and your blind spot, signal, and merge into a gap.
Pregunta 6 de 25
What does this sign mean?
- A highway patrol station is ahead
- A helicopter landing pad is ahead
- A hospital is nearby
- A hotel is nearby
Ver respuesta
Respuesta: C. A hospital is nearby
Blue signs show services for drivers, such as hospitals, gas, food and lodging.
Pregunta 7 de 25
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
Ver respuesta
Respuesta: 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.
Pregunta 8 de 25
In freezing weather, which part of the road often ices over first?
- Long straight roads in the sun
- Roads in the middle of town
- Bridges and overpasses
- Uphill sections facing the sun
Ver respuesta
Respuesta: C. Bridges and overpasses
Cold air flows above and below bridges and overpasses, so they freeze before other parts of the road.
Pregunta 9 de 25
At night you see red reflectors on the road facing you. What does this most likely mean?
- You are entering a school zone
- You are going the wrong way on a one-way road or ramp
- The road ahead is wet
- You are near a fire station
Ver respuesta
Respuesta: B. You are going the wrong way on a one-way road or ramp
Red raised pavement markers face drivers who are going the wrong way on a one-way road or ramp. Turn around safely right away.
Pregunta 10 de 25
What does this sign mean?
- Traffic joining from the side gets its own lane, so it does not need to merge
- Two-way traffic ahead
- The road narrows ahead
- You must merge left now
Ver respuesta
Respuesta: A. Traffic joining from the side gets its own lane, so it does not need to merge
The entering traffic gets a new lane. Still watch for drivers who change lanes.
Pregunta 11 de 25
You hit a parked car and the owner is not around. What should you do?
- Ask a stranger to watch the car
- Wait one minute, then leave
- Try to find the owner, or leave your information and notify the police
- Drive away
Ver respuesta
Respuesta: C. Try to find the owner, or leave your information and notify the police
If you damage an unattended car or property, you must try to find the owner or report it to the police.
Pregunta 12 de 25
What is the only thing that lowers your blood alcohol concentration?
- Time
- Exercise
- A cold shower
- Black coffee
Ver respuesta
Respuesta: A. Time
Your body removes alcohol slowly. Coffee, exercise and cold showers do not lower your BAC.
Pregunta 13 de 25
Which numbered marking separates lanes going in the same direction and allows lane changes when it is safe?
- Marking 5
- Marking 6
- Marking 2
- Marking 1
Ver respuesta
Respuesta: A. Marking 5
A broken white line (marking 5) separates lanes moving the same way. You may change lanes across it when safe.
Pregunta 14 de 25
Your brake pedal suddenly sinks to the floor. What should you try first?
- Turn off the engine
- Shift into park
- Open the door to drag your foot
- Pump the brake pedal to build up pressure
Ver respuesta
Respuesta: D. Pump the brake pedal to build up pressure
Pumping the pedal may build enough pressure to stop. If that fails, use the parking brake slowly and shift to a lower gear.
Pregunta 15 de 25
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
Ver respuesta
Respuesta: 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.
Pregunta 16 de 25
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
Ver respuesta
Respuesta: B. Left turn
The left arm held straight out means a left turn.
Pregunta 17 de 25
A driver holds the left arm out the window, bent upward at the elbow. What does this hand signal mean?
- Hazard ahead
- Slowing down or stopping
- Right turn
- Left turn
Ver respuesta
Respuesta: C. Right turn
The left arm bent upward means a right turn.
Pregunta 18 de 25
What does a flashing red traffic light mean?
- The light is about to turn green
- Stop only if other cars are coming
- Stop completely, then go when it is safe
- Slow down and go with care without stopping
Ver respuesta
Respuesta: C. Stop completely, then go when it is safe
A flashing red light means the same as a stop sign: come to a full stop, then go when the way is clear.
Pregunta 19 de 25
How should you exit a freeway?
- Stop on the shoulder, then take the exit
- Slow down in the main lane, then change lanes
- Move into the exit lane early, then slow down in the exit lane
- Cross the painted area at the last moment
Ver respuesta
Respuesta: C. Move into the exit lane early, then slow down in the exit lane
Get into the correct lane well before the exit, signal, and do most of your slowing after you enter the exit lane or ramp.
Pregunta 20 de 25
Your car breaks down on a highway. What should you do first?
- Turn on your hazard lights and pull as far off the road as you can
- Keep the lights off to save the battery
- Walk along the highway for help
- Stop in your lane and get out
Ver respuesta
Respuesta: A. Turn on your hazard lights and pull as far off the road as you can
Use your hazard flashers and get your car off the road if possible. Avoid stopping just over a hill or around a curve.
Pregunta 21 de 25
What color are the signs that warn of road work ahead?
- Blue
- Brown
- Green
- Orange
Ver respuesta
Respuesta: D. Orange
Orange signs are used for work zones and other temporary traffic control. Slow down and watch for workers.
Pregunta 22 de 25
When should you leave more than your normal following distance?
- Only when the road is dry and clear
- In bad weather or when following a large truck
- Only on city streets
- When you are in a hurry
Ver respuesta
Respuesta: B. In bad weather or when following a large truck
Add more space in rain, snow or fog, and behind large trucks that block your view.
Pregunta 23 de 25
You feel sleepy while driving. What is the safest choice?
- Open the window and turn up the radio
- Chew gum and keep driving
- Drive faster to get home sooner
- Pull over in a safe place and rest or take a short nap
Ver respuesta
Respuesta: D. Pull over in a safe place and rest or take a short nap
Tricks like a cold window or loud music do not work. Stop and rest; only sleep cures drowsiness.
Pregunta 24 de 25
You have parked on the street. What should you do before opening your door on the traffic side?
- Turn on your headlights
- Honk your horn
- Check behind you for bicyclists and cars
- Open the door quickly to get out fast
Ver respuesta
Respuesta: C. Check behind you for bicyclists and cars
Opening a door into the path of a bicyclist can cause a serious crash. Look back before you open it.
Pregunta 25 de 25
How far should you sit from the air bag in the steering wheel?
- At least 3 feet
- As close as you can
- At least 10 inches
- At least 2 inches
Ver respuesta
Respuesta: C. At least 10 inches
Sit at least 10 inches from the air bag cover, as long as you can still control the vehicle safely.

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