Test 4 of 10 · 20 questions · Free 2026
IA Permit Practice Test 4
Jump to the test ↓A fixed 20 question set from the Iowa bank with answers and plain English explanations.
Fixed test, 20 questions · Verified against the Driver's Handbook · Free
Test 4 has 20 questions. Every question explains itself the moment you answer.Fixed test: retakes serve these exact questions, handy for studying test by test.
All 20 questions in test 4
Every question below comes from the Iowa question bank on this page. Open a question to see the correct answer and the explanation. Nothing here is hidden behind a signup.
1. How close to a railroad crossing is parking prohibited in Iowa?
- Within 20 feet
- Within 5 feet
- Within 10 feet
- Within 50 feet
Show answer
Within 50 feet. Iowa prohibits parking closer than 50 feet from a railroad crossing. The shorter distances in the choices are easy to confuse with other parking restrictions in the same section, including the five-foot fire-hydrant rule and the ten-foot stop-sign rule. Twenty feet is also used for a fire-station entrance, not the crossing. Separate the locations before recalling the number: railroad crossing means 50 feet. This buffer protects sight lines and leaves room around tracks for trains and responding traffic.
2. What speed does Iowa's reflective orange triangle identify on a vehicle's rear?
- The vehicle is traveling 35 mph or less
- The vehicle is traveling exactly 25 mph
- The vehicle is carrying hazardous cargo
- The vehicle is stopped for an emergency
Show answer
The vehicle is traveling 35 mph or less. A reflective orange triangle marks a vehicle traveling at 35 mph or less. It warns approaching drivers about slow equipment such as road maintenance machines, farm vehicles, or horse-drawn wagons. The symbol does not set an exact 25 mph speed, identify hazardous cargo, or mean the vehicle is stopped. Treat the triangle as a speed-and-awareness cue: reduce your approach speed, allow extra time, and pass slowly when the roadway permits.
3. At an Iowa all-way stop, two vehicles arrive at the same time. Which vehicle proceeds first?
- The vehicle on the right
- The vehicle on the left
- The larger vehicle
- The vehicle that flashes headlights
Show answer
The vehicle on the right. When vehicles arrive at an all-way stop at the same time, the vehicle on the right goes first after both drivers have come to a complete stop. The vehicle on the left must yield, and size or a headlight flash does not decide the order. If one vehicle arrived first, that earlier arrival controls instead, so confirm the timing before using the side-based tie rule. The key sequence is full stop first, then right goes first only when arrival is simultaneous.
4. At what blood alcohol concentration does Iowa define operating while intoxicated for alcohol?
- A BAC of .02 or higher for every driver
- A BAC of .08 or higher
- A BAC of .10 or higher only
- Any BAC below .08 is automatically OWI for adults
Show answer
A BAC of .08 or higher. For alcohol, Iowa defines operating while intoxicated as having a blood alcohol concentration of .08 or higher. The .02 figure belongs to a separate underage rule and should not be applied to every driver in this question. A .10 threshold is higher than the manual's stated point, while the choice “Any BAC below .08 is automatically OWI for adults” overstates the adult definition. The manual also notes that operating with any amount of a controlled substance is covered. Do not use a personal feeling of sobriety as a substitute for the legal threshold or a safe driving decision.
5. When a steady yellow signal appears, which response matches Iowa guidance?
- Do not enter if you can stop safely; otherwise continue cautiously
- Enter the intersection faster to beat the red signal
- Stop in the intersection even if the vehicle has already crossed the line
- Treat it as a flashing red signal and wait for a full cycle
Show answer
Do not enter if you can stop safely; otherwise continue cautiously. A steady yellow signal marks a transition and calls for a judgment about stopping safely. If the vehicle can stop without creating a hazard, it should not enter the intersection. If stopping safely is no longer possible, the driver should proceed through with caution. Accelerating to beat red is an unsafe gamble, while stopping after already entering can block cross traffic. Look ahead, check the intersection, and avoid a harsh stop when the vehicle is too close to the line. Yellow means prepare and decide, not race.
6. What must a driver do at an octagonal stop sign?
- Yield without stopping when traveling straight
- Slow down only if another vehicle is visible
- Come to a full stop and wait until the crossing area is clear
- Stop after entering the intersection
Show answer
Come to a full stop and wait until the crossing area is clear. An octagonal sign is reserved for a stop sign, and the manual requires a full stop before the driver proceeds. The driver must also wait until crossing vehicles and the crosswalk are clear. Merely slowing down does not satisfy the sign, and entering the intersection before stopping reverses the required sequence. The straight-ahead option is not an exception. Look for the stop line, halt there when one is present, and then scan both the traffic path and crosswalk before moving. That pause creates room for people or vehicles that may still be crossing.
7. When the top two red lights of a pedestrian hybrid beacon become solid, what must motorists do?
- Continue without slowing
- Stop for pedestrians
- Speed up before the lights flash
- Turn off the headlights
Show answer
Stop for pedestrians. A pedestrian hybrid beacon progresses through several stages, and solid red lights require motorists to stop for pedestrians. Proceeding without slowing ignores the active stop phase, while accelerating or turning off headlights has no role in the signal sequence. After a period, the top red lights begin flashing, and motorists who have not already stopped must stop and may proceed cautiously only when the crosswalk is clear. The practical cue is the pair of solid red lights at the top of the beacon. Treat that display as a stop instruction and watch the crossing area before moving again.
8. What kind of insurance evidence may an Iowa driver carry?
- A repair order from the last inspection
- A verbal promise from the vehicle owner
- A vehicle title showing the purchase date
- An insurance card in printed or electronic form
Show answer
An insurance card in printed or electronic form. Iowa accepts an insurance card as proof of liability insurance, and the card can be printed or electronic. The format changes how the evidence is stored, not the requirement to carry evidence. A verbal assurance cannot be checked like a card, while a title proves ownership rather than liability coverage. A repair order concerns maintenance and says nothing about insurance. The useful exam cue is to separate documents by purpose: the insurance card verifies coverage, while registration proof identifies the vehicle for state records.
9. Where is a pennant-shaped no-passing sign placed?
- At the end of a divided highway
- On the right side after passing becomes legal
- Above every railroad crossing
- On the left side of the road at the beginning of the no-passing zone
Show answer
On the left side of the road at the beginning of the no-passing zone. The pennant is distinctive because it is placed on the left side of the road and marks the beginning of a no-passing zone. Passing is restricted there because the roadway ahead may not provide enough sight distance for a safe maneuver. The sign is not an end marker, a railroad sign, or a divided-highway notice. Stay in your lane and wait for a lawful passing area with enough visibility and space before overtaking another vehicle.
10. What is the safest general response to a yellow warning sign showing a road hazard?
- Move onto the shoulder immediately
- Maintain speed because warnings are advisory only
- Slow down and be prepared to stop if necessary
- Pass every vehicle before reaching the hazard
Show answer
Slow down and be prepared to stop if necessary. Iowa warning signs identify a special situation or hazard ahead. Their purpose is to prompt a slower, more observant approach and readiness to stop if the situation requires it. A warning is not permission to maintain speed, use the shoulder, or pass before reaching the hazard. Scan beyond the sign for the road shape, traffic, people, and any additional plaque or control device. Adjust early so the vehicle remains stable and you have room to respond.
11. If you cannot see the driver of a large truck in its mirror, what should you assume?
- The truck must yield immediately
- The truck driver is signaling you to pass
- You are outside every truck blind spot
- The truck driver cannot see you
Show answer
The truck driver cannot see you. Large trucks have no-zones at the front, back, and sides. The manual gives a simple visibility test: if you cannot see the truck driver in the truck's mirror, that driver cannot see you. The signal choice invents permission to pass, and being unable to see the driver is evidence of a blind spot, not proof that you are clear. Increase space and change position only when the maneuver is safe. Avoid lingering beside or directly behind the truck.
12. If an emergency vehicle approaches while you are in an intersection, what should you do first?
- Reverse into the cross street
- Stop immediately across the intersection
- Drive through the intersection before pulling over
- Turn around and follow the emergency vehicle
Show answer
Drive through the intersection before pulling over. Iowa's manual directs a driver already in an intersection to drive through it before pulling over. That clears the conflict point and gives the emergency vehicle a more predictable path. Stopping across the intersection can obstruct traffic, while reversing or turning around introduces unnecessary movements near a response vehicle. Once beyond the intersection, pull toward the right as near to the edge as possible. The special median exception is separate and applies when the emergency vehicle is on the other side of a divided roadway.
13. Can an Iowa driver under 18 receive a temporary restricted license during an OWI revocation?
- Yes, automatically after 10 days
- No, not while the license is revoked for OWI
- Yes, but only for school travel
- Yes, after paying the fine
Show answer
No, not while the license is revoked for OWI. The manual says offenders under age 18 are not eligible for a temporary restricted license while their license is revoked for OWI. The automatic, school-only, and fine-payment choices all add exceptions that the passage does not provide. This is an age-specific consequence layered on top of the revocation, so do not import rules that may apply to older drivers. On an exam item, identify both conditions: the driver is under 18 and the revocation is for OWI. Together they remove temporary restricted license eligibility during that period.
14. You are towing a small trailer on an Iowa road with no posted speed limit. What general limit applies?
- 55 mph
- 45 mph
- 60 mph
- 65 mph
Show answer
45 mph. Iowa sets a general limit of 45 mph for any vehicle pulling another vehicle when no other limit is posted. That is the same figure as a suburban district. Sixty mph is the general limit for primary roads and urban interstates without a trailer, 55 is not one of Iowa's listed general limits, and 65 is higher than any unposted limit for a towing vehicle. A lower limit can always be set for the conditions.
15. In Iowa, how must a 12 year old be secured in the back seat?
- In a child restraint system or by a seat belt
- No restraint is required in the back seat
- Only in a booster seat
- Only in a rear-facing seat
Show answer
In a child restraint system or by a seat belt. A child from age six up to 18 must be secured in a child restraint system or by a seat belt in every seating position, front and back. That is why the back seat is not exempt for a 12 year old. A booster only or rear-facing only rule is too narrow for this age. Adults 18 and older are required to buckle up in the front seats, while passengers under 18 must be restrained in the back as well.
16. A red slash over a U-shaped arrow means the driver must not:
- Enter a one-way street
- Turn left at the next intersection
- Pass another vehicle
- Make a U-turn
Show answer
Make a U-turn. The crossed U-shaped arrow bars a U-turn at that location. A left-turn restriction would show a left-turn symbol, while a passing restriction concerns whether the roadway is safe for overtaking. The one-way choice describes traffic direction and is not what this symbol communicates. Read the red slash as a prohibition applied to the pictured movement, then continue in the permitted direction until a legal place allows you to turn around. A quick visual check of the arrow shape prevents confusing this sign with the separate no-left-turn symbol.
17. What can an Iowa driver face for causing a death while distracted?
- A $100 fine
- More than $1,000 in fines, license suspension, and possibly a vehicular homicide charge
- A warning letter
- Only civil liability
Show answer
More than $1,000 in fines, license suspension, and possibly a vehicular homicide charge. If you are distracted and cause the death of another person, the manual says you could face more than $1,000 in fines, have your license suspended, and depending on the circumstances be charged with vehicular homicide. Distraction is treated as a choice with criminal consequences, not a minor lapse. The hands free law requires a complete stop off the roadway before handling a message.
18. What restraint is required for a child under six years old in Iowa?
- A rear-facing restraint only after the child turns six
- A seat belt alone in every seating position
- A child restraint system, such as a safety seat or booster seat
- No restraint if the trip is within the neighborhood
Show answer
A child restraint system, such as a safety seat or booster seat. A child under six must be secured in a child restraint system, which the manual describes as a safety seat or booster seat rather than a seat belt alone. The neighborhood exception is not part of the rule, and a rear-facing system is tied to a different age and weight condition. The seat-belt-only choice therefore provides the wrong protection for this age group. Select a suitable child restraint, install it correctly, and use it for every trip, including short local drives.
19. Your car is swept into water and submerged in Iowa. What does the manual say about opening the doors?
- Wait for the vehicle to fill with water; once full, the doors are easier to open, then hold your breath and swim to the surface
- Break the windshield first
- Wait for rescuers to open them
- Force the doors open immediately
Show answer
Wait for the vehicle to fill with water; once full, the doors are easier to open, then hold your breath and swim to the surface. If your car is swept into the water and submerged, remain calm and wait for the vehicle to fill with water. Once the vehicle is full, the pressure equalizes and the doors are easier to open; hold your breath and swim to the surface. Forcing a door against the water pressure early rarely works, and waiting for rescuers wastes the air you have. The best defense is never driving into floodwater.
20. According to the Iowa manual, being awake for 18 hours straight is as impairing as what BAC?
- 0.05 percent
- 0.02 percent
- 0.08 percent
- 0.15 percent
Show answer
0.08 percent. Being awake for 18 hours straight is as impairing as a blood alcohol concentration of 0.08 percent, which is legally drunk and leaves you at equal risk for a crash. Fatigue slows reactions and judgment the same way alcohol does, without any test to catch it. Plan rest before a long drive, stop when you feel drowsy, and share the wheel on long trips.
Every question is written from the official Iowa Driver's License Manual. Need paper? Printable IA practice test with answer key.
Last verified 2026-09-07. How we check every question · Study all 210 as flashcards
Frequently asked questions
How many questions are on this Iowa practice test?
This fixed set has 20 questions. It is test 4 of 10 from the 210 question Iowa bank.
How does this fixed test relate to the full Iowa bank?
Each numbered test is a fixed set of 20 questions in a fixed order, so you can retake the same test later and compare. Every test mixes road signs and the other topics in about the same proportion as the full bank. Tests 1 to 10 together cover 200 of the 210 questions in the Iowa bank, each once. The full practice page mixes the whole bank at random.
Last verified 2026-09-07. See the Iowa DMV facts page for sourced state details.
