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Test 4 of 25 · 20 questions · Free 2026

IA Permit Practice Test 4

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A fixed 20 question set from the Iowa bank with answers and plain English explanations. You need 80% to pass the Iowa permit knowledge test; the official Iowa sources we checked do not state a fixed question count.

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4 of 25
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Question 1 of 20 · 0 right so far

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Which farm-equipment trip is listed as an Iowa driver's-license exemption?

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. 1. Which farm-equipment trip is listed as an Iowa driver's-license exemption?

    1. A daily commute in a passenger car owned by a farm
    2. Any farm trip across Iowa without a license
    3. Travel from a farm to any city beyond the county
    4. Travel between the home farm and nearby farmland within two miles
    Show answer

    Travel between the home farm and nearby farmland within two miles. The manual exempts driving farm equipment between the home farm and nearby farmland or a farm operation within two miles. The distance and equipment conditions matter. The exemption is not a blanket permission for every farm trip across Iowa, and it does not cover a passenger car simply because a farm owns it. A city destination beyond the stated nearby operation also changes the situation. For recall, pair the special vehicle with the short two-mile farm-to-farm connection.

    Study this in the handbook: Who Needs a License and What to Carry

  2. 2. When a driver illegally passes a stopped school bus, what license consequence may Iowa impose?

    1. A mandatory suspension of exactly 30 days
    2. A warning with no possible license action
    3. Permanent revocation for the first violation
    4. Suspension for up to 180 days
    Show answer

    Suspension for up to 180 days. Iowa says a school-bus passing violation may result in a driver's license being suspended for up to 180 days. The phrase up to sets a maximum period, not an automatic 30-day term, and the manual does not describe a permanent first-offense revocation here. A warning-only response understates the possible consequence. When a bus displays the relevant warning lights and stop arm, stop as required for the roadway scenario and remain stopped until the manual's release condition is met.

    Study this in the handbook: Stopping for School Buses

  3. 3. You must slow down where the driver behind you will not expect it. How can you warn that driver?

    1. Turn on your hazard lights and stop suddenly
    2. Wave your arm out the window
    3. Tap your brake pedal three or four times quickly
    4. Flash your headlights
    Show answer

    Tap your brake pedal three or four times quickly. Your brake lights can talk to the driver behind you. When you plan to stop or slow down somewhere another driver will not expect, or when someone is following too closely, Iowa says to tap the brake pedal three or four times quickly. The flashing brake lights tell following drivers that you are about to slow down. Stopping suddenly, even with hazard lights on, is the very surprise the warning is meant to prevent, and headlights face forward where the driver behind cannot see them.

    Study this in the handbook: Following Distance and Stopping

  4. 4. You notice you are driving in another driver's blind spot. What does Iowa tell you to do?

    1. Either speed up or slow down so the other driver can see you
    2. Stay there and match the other car's speed
    3. Honk until the other driver moves over
    4. Move closer to the other car so its driver notices you
    Show answer

    Either speed up or slow down so the other driver can see you. Blind spots are areas that a driver cannot see using mirrors. Iowa says not to drive in another driver's blind spot: either speed up or slow down so the other driver can see your vehicle. Matching the other car's speed keeps you hidden right where a lane change could hit you. When passing, get through the other driver's blind spot as quickly as you can, and never stay alongside a large vehicle such as a truck or bus, which has large blind spots.

    Study this in the handbook: Vehicle Checks, Seat Belts and Child Restraints

  5. 5. When an emergency vehicle is on the other side of a divided highway, what does Iowa require?

    1. You do not have to stop
    2. You must stop in the median
    3. You must reverse to the last intersection
    4. You must follow the emergency vehicle
    Show answer

    You do not have to stop. Iowa provides an exception when a street or highway is separated by a median and the emergency vehicle is on the other side: the driver does not have to stop. This does not authorize crossing the median, reversing, or following the emergency vehicle. On an undivided road, the normal response remains to pull right, and a driver already in an intersection should clear it before pulling over. Look for the median and the emergency vehicle’s position before deciding.

    Study this in the handbook: Intersections and Right of Way

  6. 6. What movement is prohibited by a red slash over a left-turn arrow?

    Left-turn arrow crossed by red slash
    1. A right turn
    2. A left turn
    3. A U-turn
    4. Going straight through the intersection
    Show answer

    A left turn. The symbol identifies a prohibited left turn. It does not automatically ban a right turn, a U-turn, or continuing straight, unless another sign or traffic control device restricts those movements. The arrow pictured inside the red circle is the key clue, and the slash tells you that movement cannot be made there. Before entering the intersection, choose a permitted path and watch for lane arrows or other signs that further limit where you may go.

    Study this in the handbook: Regulatory Signs

  7. 7. When no limit is posted, what is the general speed limit on Iowa primary roads and urban interstate highways?

    1. 70 mph
    2. 65 mph
    3. 60 mph
    4. 55 mph
    Show answer

    60 mph. Iowa's general limit is 60 mph on all primary roads, on urban interstate highways, and on secondary roads, including unpaved roads, from sunrise to sunset. Seventy mph applies only on rural interstate highways. The 45 mph figure is for suburban districts and for any vehicle pulling another vehicle. Sixty five and 55 mph are not among Iowa's listed general limits. On any interstate, the minimum speed is 40 mph.

    Study this in the handbook: Iowa Speed Limits

  8. 8. What following distance does the Iowa manual recommend at 40 mph?

    1. One second
    2. Two seconds at all speeds
    3. Four to five seconds
    4. Ten seconds
    Show answer

    Four to five seconds. At speeds of 40 mph, Iowa recommends a four to five second following distance. Two seconds may be sufficient for an experienced driver in normal conditions, but the manual gives four to five seconds at 40 mph. One second is tailgating, and ten seconds is more than the manual calls for. When roads are slippery or the vehicle ahead blocks your view, increase the gap to six or more seconds.

    Study this in the handbook: Following Distance and Stopping

  9. 9. A row of solid white triangles is painted across your lane, pointing toward you. What do these markings show?

    1. A speed bump ahead
    2. The start of a no-passing zone
    3. A lane reserved for buses
    4. The point where you should yield
    Show answer

    The point where you should yield. These are yield lines. A row of solid white triangles pointing toward approaching vehicles extends across the lane to mark the spot where drivers should yield, in compliance with Yield, Yield Here To Pedestrians, or Yield Here to Pedestrians and Bicycles signs. They show where to wait, not a feature of the pavement ahead. No-passing zones are shown by yellow center lines and the pennant sign, and reserved lanes are marked by signs and often a white diamond. When you must yield, slow or stop before the triangles.

    Study this in the handbook: Pavement Markings and Lane Use

  10. 10. What roadway change is announced by a lane-ends warning?

    Yellow sign showing right lane narrowing
    1. A new passing lane will open
    2. Two lanes will soon become one
    3. The road will become one-way in both directions
    4. The shoulder will become a travel lane permanently
    Show answer

    Two lanes will soon become one. A lane-ends warning means two lanes of traffic will soon become one lane. Drivers must yield when merging, so do not assume the other lane has to disappear without cooperation. Check traffic beside and behind you, signal, and move into the continuing lane when a safe gap is available. The sign does not announce a new passing lane or a permanent shoulder lane. Early awareness helps you merge without an abrupt brake application.

    Study this in the handbook: Warning, Guide and Service Signs

  11. 11. What do the shape and color of a traffic sign help a driver identify?

    1. The vehicle's required fuel grade
    2. The type of information the sign provides
    3. The distance since the last license renewal
    4. The weather forecast for the next hour
    Show answer

    The type of information the sign provides. Sign shape and color are recognition tools that help a driver understand whether the message concerns a law, hazard, destination, service, or another roadway condition. The choice “The type of information the sign provides” describes that purpose. The remaining choices invent information that traffic signs are not designed to provide. Once the general category is recognized, read the symbol or wording and respond to the actual instruction. For example, a warning color should prompt a scan for the hazard ahead, while a regulatory color signals an enforceable rule. Good sign reading combines the visual clue with the road situation.

    Study this in the handbook: Sign Colors and Shapes

  12. 12. How must a driver handle a flashing red traffic signal?

    1. Treat it the same as a stop sign
    2. Treat it as a flashing yellow and continue without stopping
    3. Stop and wait until the signal becomes solid green
    4. Slow only if cross traffic is visible
    Show answer

    Treat it the same as a stop sign. A flashing red signal has the same stopping meaning as a stop sign. Come to a complete stop, check the intersection and crosswalk, and proceed only after the movement is safe and permitted. Continuing without stopping confuses red with flashing yellow. Waiting for a solid green is also unnecessary because the driver may go after the stop when the way is clear. Do not decide based only on whether another vehicle is visible; pedestrians and traffic can approach from outside the first glance. Stop first, then scan fully.

    Study this in the handbook: Traffic Signals and Pedestrian Beacons

  13. 13. What scheduled fines does Iowa law set for seat belt and child restraint violations?

    1. $25 for every violation regardless of age
    2. $50, or $100 when the passenger is under 18
    3. $70 for a seat belt violation, or $135 for a restraint violation involving a passenger under 18
    4. $500 for the driver only, with no passenger fine
    Show answer

    $70 for a seat belt violation, or $135 for a restraint violation involving a passenger under 18. Iowa Code section 805.8A sets the scheduled fines for these violations. A seat belt violation under section 321.445 carries a $70 fine, and a violation of the restraint rule in section 321.446 carries a $135 fine. The schedule has no flat $25 fine for every case and no $500 driver only fine. The manual explains who must be restrained: adults 18 and older must wear a seat belt in the front seats, and passengers under 18 must be secured in every seating position, front and back. Buckle every occupant before the vehicle moves.

  14. 14. On a road with two or more lanes moving in the same direction, what is the left lane generally used for?

    1. Passing
    2. Parking whenever traffic is heavy
    3. Entering from driveways only
    4. Traveling slowly below the flow of traffic
    Show answer

    Passing. Iowa's general lane-use guidance says the left lane is generally used for passing when two or more lanes travel in the same direction. It is not a parking lane, a driveway-only lane, or a place to remain slow while other traffic approaches. On roads with three or more lanes, the manual advises staying in the right or center lane except to pass. Use the left lane for the passing task, then return when the maneuver is complete and conditions allow.

    Study this in the handbook: Pavement Markings and Lane Use

  15. 15. At an uncontrolled intersection on a rural gravel road, what should drivers be prepared to do?

    1. Use the shoulder as the normal through lane
    2. Follow a dust cloud without reducing speed
    3. Assume the crossing is clear after one glance
    4. Stop for oncoming traffic
    Show answer

    Stop for oncoming traffic. Rural gravel intersections may have no yield or stop signs, and dust can hide a crossing vehicle. Drivers should slow down and be prepared to stop for oncoming traffic. Following a dust cloud at speed reduces the time available to react, while a single glance cannot prove that the crossing is clear. The shoulder is softer and less stable, not a substitute lane. Approach with reduced speed, look beyond the dust, and keep enough control to stop before entering the other road.

    Study this in the handbook: Roundabouts and Uncontrolled Intersections

  16. 16. Under Iowa's hands-free law, may you type a destination into your GPS while driving?

    1. Yes, GPS is exempt
    2. No, entering an address while driving is prohibited
    3. Yes, if you are under 25 mph
    4. Yes, at night only
    Show answer

    No, entering an address while driving is prohibited. Iowa's hands-free law says you cannot enter an address into a GPS while driving. You also cannot hold the phone, scroll, type, view texts or videos, or make video calls. There is no GPS exemption and no speed or time of day exception. Set your destination before you start, or stop completely off the traveled portion of the roadway first. Voice commands may be used for calls.

    Study this in the handbook: Iowa's Hands-Free Law and Distractions

  17. 17. What does a red circle with a red slash over a symbol on a regulatory sign mean?

    Regulatory sign with a red circle and slash over a left turn arrow
    1. The roadway is reserved for the symbol shown
    2. The action shown is recommended during bad weather
    3. The action shown by the symbol is prohibited
    4. The symbol identifies the next available service
    Show answer

    The action shown by the symbol is prohibited. A red circle with a red slash is used on regulatory signs to show that a driver cannot do the action represented by the symbol. Examples include no left turn, no right turn, and no U-turn. The marking is not a recommendation, reservation, or service symbol. Study the picture beneath the slash because that picture identifies the prohibited movement. Before turning, scan for the sign so a permitted maneuver at one intersection is not carried into a restricted one.

    Study this in the handbook: Regulatory Signs

  18. 18. Does Iowa's implied consent law apply to a driver licensed in another state who is driving through Iowa?

    1. No, it applies to Iowa license holders
    2. Yes, it applies to non-resident drivers too
    3. No, it applies after 30 days in the state
    4. Only for commercial drivers
    Show answer

    Yes, it applies to non-resident drivers too. Iowa license holders agree to testing on demand by law enforcement, and the manual states the law also applies to any non-resident drivers traveling in the state. An out of state license does not exempt a driver, and there is no 30 day residency condition or commercial only limit for this rule. Refusing the test brings an automatic one year revocation of the license.

    Study this in the handbook: Operating While Intoxicated (OWI)

  19. 19. On ice and snow, how much greater can stopping distances be, according to the Iowa manual?

    1. Twice as great
    2. Three times as great
    3. Five times as great
    4. Up to 10 times greater
    Show answer

    Up to 10 times greater. Iowa warns that stopping distances can be as much as 10 times greater on ice and snow. That is why the handbook tells you to begin slowing long before an intersection or turn and to brake only while traveling in a straight line. The three-times figure comes from a different comparison, a car at 60 mph versus one at 30 mph, so it does not describe winter traction. Stay far behind the vehicle ahead so you never need a sudden stop, which can cause skidding.

    Study this in the handbook: Following Distance and Stopping

  20. 20. After shifting a stuck accelerator to neutral, when should the driver turn off the engine?

    1. After the vehicle has stopped
    2. Before steering toward a safe place
    3. Only after reaching a fuel station
    4. Immediately while traveling at full speed
    Show answer

    After the vehicle has stopped. The manual places engine shutdown after the vehicle has been brought to a stop. Turning the engine off immediately at full speed can create an added loss of control, especially in vehicles whose steering may lock when the key is removed. The fuel station choice adds an unsafe destination and the steering choice ignores the need to leave the roadway safely. Keep your attention on the path, select neutral, move off the road when safe, stop, and then switch off the engine. That order reduces the emergency one step at a time.

    Study this in the handbook: Equipment Failures and Crashes

Frequently asked questions

How many questions are on this Iowa practice test?

This fixed set has 20 questions. It is test 4 of 25 from the 500 question Iowa bank. You need 80% to pass the Iowa permit knowledge test; the official Iowa sources we checked do not state a fixed question count.

How does this fixed test relate to the full Iowa bank?

Each numbered test is a fixed set of 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 25 together cover every question in the Iowa bank once. The full practice page mixes the whole bank at random.

Page updated 2026-10-19. See the Iowa DMV facts page for sourced state details.

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