I85PREP
⌘ K
ND Road Signs Practice study materials
ND Road Signs Practice study resources

ND Road Signs Practice practice questions

One question at a time. Build your ND Road Signs Practice understanding.

First 50 of 200 questions. Each one lists the choices, the correct answer, and an explanation. The checker at the top of this page saves progress in this browser when it is available.

Continue in the practice tool above to load more questions, 50 at a time.

Question 1Regulatory signs (speed limits, stop/yield, prohibitions, lane use)

On a North Dakota two-lane rural highway with no posted speed limit sign, what is the maximum lawful speed for a passenger vehicle during daylight?

  1. 65 mph Correct answer.
  2. 75 mph
  3. 55 mph
  4. 70 mph

Explanation

North Dakota law sets the default maximum speed at 65 mph on rural two-lane highways when no lower limit is posted. Higher limits such as 70 or 75 mph apply only where a sign specifically authorizes them on certain divided or controlled-access routes. Drivers must always obey a posted limit that differs from the statutory default.

Question 2Regulatory signs (speed limits, stop/yield, prohibitions, lane use)

A regulatory sign shows a black numeral 45 inside a white rectangle with a black border. What does this sign require a driver to do?

  1. Reduce speed to 45 mph only in rain
  2. Expect a 45 mph advisory curve ahead
  3. Travel no faster than 45 mph Correct answer.
  4. Maintain a minimum speed of 45 mph

Explanation

A white rectangular sign with black numerals is a regulatory speed limit sign, and it establishes the maximum lawful speed. It is not a minimum-speed sign, which is typically a white sign with a blue or black minimum marking, nor an advisory sign. Advisory curve speeds use a yellow background with black numerals.

Question 3Regulatory signs (speed limits, stop/yield, prohibitions, lane use)

You approach a red octagonal sign at a low-visibility intersection. After stopping, what is the correct sequence before proceeding?

  1. Stop only if another vehicle is already visible in the intersection
  2. Stop fully, yield to traffic and pedestrians with the right of way, then go when clear Correct answer.
  3. Slow to a rolling check, then proceed if no vehicle is within 50 feet
  4. Sound the horn, then enter the intersection without stopping

Explanation

A stop sign requires a complete halt at the stop line, crosswalk, or edge of the roadway, followed by yielding to cross traffic and pedestrians. Proceeding is allowed only once the way is clear and safe. A rolling stop does not satisfy the legal requirement.

Question 4Regulatory signs (speed limits, stop/yield, prohibitions, lane use)

What does a downward-pointing red-and-white triangular sign require of a driver?

  1. Merge without slowing because traffic must yield to you
  2. Yield only to vehicles approaching from the left
  3. Come to a complete stop before entering
  4. Slow down and give the right of way to cross traffic Correct answer.

Explanation

The inverted triangle is the yield sign, and it requires slowing and granting the right of way to traffic on the intersecting road. A full stop is required only when necessary to yield safely. It is not a stop sign and does not create a merge priority for the entering driver.

Question 5Regulatory signs (speed limits, stop/yield, prohibitions, lane use)

A white rectangular sign displays a red circle with a diagonal slash over a left-turn arrow. What does this sign communicate?

  1. Left turns are allowed after a full stop
  2. Left turns are permitted only during green arrows
  3. A left-turn lane begins ahead
  4. Left turns are prohibited at this location Correct answer.

Explanation

A red circle with a diagonal slash is the universal prohibition symbol, so the sign bans the maneuver pictured. Here it prohibits left turns at that intersection. Regulatory prohibitions apply at all times unless a supplementary plaque states a condition.

Question 6Regulatory signs (speed limits, stop/yield, prohibitions, lane use)

A white sign reads 'NO RIGHT TURN ON RED.' What does this require of a driver stopped at the red light?

  1. Turn right after coming to a complete stop and waiting five seconds
  2. Remain stopped until the light turns green Correct answer.
  3. Turn right after yielding to traffic
  4. Turn right only if no pedestrians are present

Explanation

The sign overrides the general permission to turn right after stopping at a red light. The driver must stay stopped until a green signal or other lawful indication permits movement. Yielding does not cure the prohibition.

Question 7Regulatory signs (speed limits, stop/yield, prohibitions, lane use)

A white sign marks a lane with a bicycle symbol and the word 'BIKE.' What does this regulatory marking indicate?

  1. Bicyclists must dismount and walk in this lane
  2. Motor vehicles may park in the lane during off-peak hours
  3. The lane is a shared turn lane for all traffic
  4. The lane is reserved for bicyclists and motor vehicles must not use it Correct answer.

Explanation

A designated bike lane sign reserves that lane for bicycle traffic, and motor vehicles may not drive or park in it. Bicyclists ride rather than walk in a marked bike lane. Shared turn lanes are marked differently, typically with two-way turn arrows.

Question 8Regulatory signs (speed limits, stop/yield, prohibitions, lane use)

A white rectangular sign shows a left-turn arrow with a red slash through it and a straight-ahead arrow beside it. How should a driver interpret this combination?

  1. The left lane must turn left and the right lane continues straight
  2. Left turns are allowed only from the right lane
  3. The left-turn movement is prohibited, so proceed straight only Correct answer.
  4. The straight movement is prohibited and only left turns are allowed

Explanation

The slash over the left arrow prohibits turning left, while the unmarked straight arrow shows the permitted movement. The combination tells drivers at that position to continue straight. It does not grant a left turn from any lane.

Question 9Regulatory signs (speed limits, stop/yield, prohibitions, lane use)

A yellow diamond sign shows a black arrow curving to the right with the numeral 35 beneath it. How does this sign function?

  1. It advises a safe curve speed of 35 mph Correct answer.
  2. It marks a 35 mph school zone limit
  3. It sets a 35 mph regulatory maximum for the curve
  4. It requires a minimum speed of 35 mph through the curve

Explanation

Yellow diamond signs are warning signs, and a numeral with a curve arrow is an advisory speed for the curve. It recommends a safe speed under good conditions but is not an enforceable regulatory maximum. Drivers may still be cited for unsafe speed if conditions warrant slower travel.

Question 10Regulatory signs (speed limits, stop/yield, prohibitions, lane use)

A white sign reads 'SPEED LIMIT 55' with a smaller plaque below reading 'TRUCKS 45.' How should a truck driver apply these signs?

  1. Obey 55 mph because the general limit overrides the plaque
  2. Ignore both signs because truck limits are advisory
  3. Average the two limits and drive 50 mph
  4. Obey 45 mph because the truck-specific limit applies Correct answer.

Explanation

A truck-specific speed plaque establishes a lower maximum that applies to trucks at that location. The general 55 mph limit still governs passenger vehicles. Truck drivers must follow the more restrictive posted limit.

Question 11Regulatory signs (speed limits, stop/yield, prohibitions, lane use)

A white sign with a red slash over a pedestrian symbol appears at a mid-block location. What does it prohibit?

  1. Pedestrians crossing at that location Correct answer.
  2. Vehicles stopping for pedestrians
  3. Use of the crosswalk by bicyclists only
  4. Pedestrian traffic on the adjacent sidewalk

Explanation

The red slash over a pedestrian symbol prohibits pedestrians from crossing at that spot, often because visibility or traffic flow makes it unsafe. Drivers are still obligated to avoid striking pedestrians who enter the roadway. The sign does not ban stopping for pedestrians elsewhere or affect sidewalk use.

Question 12Regulatory signs (speed limits, stop/yield, prohibitions, lane use)

A white rectangular sign displays a red slash over a U-shaped arrow. What maneuver does this sign prohibit?

  1. Left turns from a one-way street
  2. U-turns at this location Correct answer.
  3. Right turns at the intersection
  4. Backing into a driveway

Explanation

The U-shaped arrow represents a U-turn, and the red slash prohibits making one at that location. The sign does not restrict ordinary right or left turns. U-turn prohibitions are common where visibility or traffic volume makes the maneuver unsafe.

Question 13Regulatory signs (speed limits, stop/yield, prohibitions, lane use)

A white sign reads 'KEEP RIGHT' beside a raised median. What action does it require?

  1. Yield to traffic entering from the right
  2. Pass the median on its right side Correct answer.
  3. Turn right at the next intersection
  4. Stay in the right lane at all times

Explanation

A KEEP RIGHT sign directs traffic to pass an obstacle or median on the right side. It is a regulatory instruction about positioning, not a turn command or lane-assignment rule. Drivers must comply to avoid traveling on the wrong side of the divider.

Question 14Regulatory signs (speed limits, stop/yield, prohibitions, lane use)

A white sign shows a single black arrow pointing straight up with the word 'ONLY' beneath it. What does this regulatory sign require?

  1. The lane is closed to all traffic
  2. The lane is reserved for through traffic only Correct answer.
  3. The lane must be used for a mandatory turn ahead
  4. The lane permits both through and turning movements

Explanation

A straight arrow with ONLY designates a through-only lane, meaning drivers in it must continue straight. Turning movements are not permitted from that lane. Mandatory turn lanes use curved arrows with ONLY.

Question 15Regulatory signs (speed limits, stop/yield, prohibitions, lane use)

A white sign reads 'NO PARKING ANY TIME' along a city street. What does this mean for a driver?

  1. Parking is allowed for up to 15 minutes
  2. Parking is allowed on weekends only
  3. Neither stopping nor parking is permitted at any time
  4. Stopping briefly to load passengers is allowed, but parking is not Correct answer.

Explanation

A no-parking sign prohibits leaving a vehicle unattended but generally still allows brief stops to load or unload passengers where stopping is not separately banned. A no-stopping sign would forbid even temporary halts. Time limits and weekend exceptions appear only when explicitly posted.

Question 16Regulatory signs (speed limits, stop/yield, prohibitions, lane use)

A white sign with a red slash over a left-turn arrow also bears a small plaque reading '7 AM - 9 AM.' How should a driver interpret the restriction?

  1. Left turns are prohibited only on weekdays during those hours
  2. Left turns are always permitted regardless of the plaque
  3. Left turns are prohibited only during the posted hours Correct answer.
  4. Left turns are prohibited at all times except those hours

Explanation

A supplementary time plaque limits the prohibition to the hours shown, so left turns are banned only during that window. Outside those hours the turn is permitted unless another restriction applies. The plaque does not create an exception to a permanent ban.

Question 17Regulatory signs (speed limits, stop/yield, prohibitions, lane use)

A white sign reads 'DO NOT PASS' with a black arrow pointing left on a two-lane road. What does it require?

  1. Passing is allowed only for slow-moving farm equipment
  2. No passing in the direction of the arrow until the restriction ends Correct answer.
  3. No passing in either direction at any point on the road
  4. Passing is allowed if the oncoming lane is clear

Explanation

A DO NOT PASS sign with a directional arrow restricts passing in the indicated direction only, typically until a sign or pavement marking ends the zone. It does not necessarily ban passing in the opposite direction. Passing remains prohibited even when the lane appears clear.

Question 18Regulatory signs (speed limits, stop/yield, prohibitions, lane use)

A white sign shows a black arrow pointing down and to the left with the word 'ONLY,' positioned above a lane. What does this sign tell drivers in that lane?

  1. They must stop before turning left
  2. They must merge left into the adjacent lane
  3. They may turn left or continue straight
  4. They must turn left at the upcoming intersection Correct answer.

Explanation

A curved left arrow with ONLY designates a mandatory left-turn lane at the intersection ahead. Drivers who enter the lane must complete the left turn. Continuing straight or merging away from the lane would violate the lane assignment.

Question 19Regulatory signs (speed limits, stop/yield, prohibitions, lane use)

A white sign reads 'ONE WAY' with an arrow pointing right. What does this regulatory sign establish?

  1. Parking is allowed only on the right side
  2. The right lane is reserved for turning traffic
  3. Drivers must turn right at the next intersection
  4. Traffic on the cross street flows only to the right Correct answer.

Explanation

A ONE WAY sign with an arrow indicates the direction of lawful travel on that roadway. At an intersection it tells drivers which way traffic on the cross street moves so they can judge gaps. It does not command a turn or govern parking.

Question 20Regulatory signs (speed limits, stop/yield, prohibitions, lane use)

A white sign displays a black symbol of a truck with a red slash through it. What does this sign prohibit?

  1. Trucks from parking overnight
  2. Trucks from using that route Correct answer.
  3. Trucks from exceeding 45 mph
  4. All vehicles from carrying cargo

Explanation

A red slash over a truck symbol bans trucks from that roadway, often because of weight, size, or residential restrictions. The sign does not regulate cargo, speed, or parking. Other vehicles remain permitted unless separately restricted.

Question 21Regulatory signs (speed limits, stop/yield, prohibitions, lane use)

A driver sees a white sign reading 'SPEED LIMIT 25' posted at the entrance to a residential subdivision. What is the legal effect of this sign?

  1. It sets a minimum speed of 25 mph
  2. It sets an enforceable maximum of 25 mph throughout the subdivision Correct answer.
  3. It applies only to vehicles over 10,000 pounds
  4. It suggests 25 mph as a comfortable speed only

Explanation

A posted speed limit sign is regulatory and establishes an enforceable maximum for the roadway it governs. Drivers may be cited for exceeding 25 mph, and may also be cited for driving too fast for conditions below that limit. It is not advisory and carries no weight-based exception.

Question 22Regulatory signs (speed limits, stop/yield, prohibitions, lane use)

A white sign reads 'NO LEFT TURN' and is posted at an intersection where a left-turn lane also exists. How should a driver who intended to turn left respond?

  1. Make the turn if no police officer is present
  2. Use the left-turn lane and wait for a green arrow
  3. Turn left only after yielding to oncoming traffic
  4. Skip the prohibited turn and choose a lawful route Correct answer.

Explanation

The regulatory sign prohibits the left turn regardless of the presence of a turn lane or signal. The driver must select another lawful route. A marked turn lane does not override a no-left-turn sign.

Question 23Regulatory signs (speed limits, stop/yield, prohibitions, lane use)

On a multi-lane road, a white sign with a red X over a lane and another with a green downward arrow over the adjacent lane appear overhead. What do these regulatory signals mean?

  1. The lane under the red X is closed and the lane under the green arrow is open Correct answer.
  2. The red X lane is reserved for buses and the green arrow lane for cars
  3. Both lanes require a complete stop before proceeding
  4. Both lanes are open but the red X lane is for turning only

Explanation

Overhead lane-control signals use a red X to close a lane and a green arrow to indicate an open lane. Drivers must vacate a lane marked with a red X and may use the lane marked with the green arrow. These signals are regulatory and enforceable.

Question 24Regulatory signs (speed limits, stop/yield, prohibitions, lane use)

A white sign reads 'MINIMUM SPEED 40' on an interstate. Under what circumstance may a driver lawfully travel slower than 40 mph?

  1. When necessary for safety due to traffic, weather, or road conditions Correct answer.
  2. Whenever the driver prefers a more relaxed pace
  3. Only when driving a vehicle with out-of-state plates
  4. Never, because minimum speed signs cannot be exceeded in any direction

Explanation

Minimum speed signs are intended to keep traffic flowing, but a driver may travel slower when conditions such as congestion, weather, or hazards make it unsafe to maintain the minimum. Driving below the minimum without justification can result in a citation. The sign does not create an absolute prohibition on slower travel.

Question 25Regulatory signs (speed limits, stop/yield, prohibitions, lane use)

A white sign shows a red slash over a horn symbol. What does this sign require of drivers?

  1. Sound the horn before entering the intersection
  2. Use the horn only between dusk and dawn
  3. Refrain from sounding the horn except to avoid imminent danger Correct answer.
  4. Honk once to signal intention to pass

Explanation

A slashed horn symbol designates a quiet zone or area where horn use is prohibited except to warn of immediate danger. Routine honking, such as greeting or signaling annoyance, is not permitted. Passing signals and intersection warnings are governed by other rules.

Question 26Regulatory signs (speed limits, stop/yield, prohibitions, lane use)

A white rectangular sign reads 'YIELD' at the entrance to a freeway on-ramp where traffic already on the freeway has no stop sign. What does this sign require of the merging driver?

  1. Sound the horn once and merge without slowing
  2. Come to a complete stop before entering the freeway lane
  3. Maintain speed and expect freeway traffic to change lanes
  4. Slow or stop as needed and give the right of way to freeway traffic Correct answer.

Explanation

A YIELD sign requires the driver to slow or stop if necessary and let conflicting traffic proceed first. On a freeway on-ramp the freeway traffic has priority, so the merging driver must adjust speed to enter safely. A full stop is required only when traffic conditions make it necessary.

Question 27Regulatory signs (speed limits, stop/yield, prohibitions, lane use)

At a four-way intersection, a white sign reads 'STOP' and no stop line or crosswalk is painted. Where must the driver stop?

  1. Anywhere within the intersection box before proceeding
  2. Ten feet before the curb line of the cross street
  3. At the point nearest the intersecting roadway where the driver has a view of approaching traffic Correct answer.
  4. Only if another vehicle is visibly approaching

Explanation

In the absence of a painted stop line or crosswalk, the stop must be made at the point nearest the intersecting roadway where the driver can see approaching traffic. This position keeps the vehicle clear of the intersection while providing a view. A driver must stop whether or not other vehicles are visible.

Question 28Regulatory signs (speed limits, stop/yield, prohibitions, lane use)

A white sign reads 'SPEED LIMIT 45' and below it a smaller plaque reads 'WHEN FLASHING.' The yellow lights are dark. What speed may a driver lawfully travel?

  1. 45 mph regardless of the lights
  2. The speed shown on the nearest yellow warning sign
  3. 45 mph only during daylight hours
  4. The speed permitted by the general limit for that road Correct answer.

Explanation

A 'WHEN FLASHING' plaque makes the posted limit conditional, so the 45 mph limit applies only while the lights are flashing. When the lights are dark, the general statutory or posted limit for that road governs. The driver should know the base limit before assuming 45 mph applies.

Question 29Regulatory signs (speed limits, stop/yield, prohibitions, lane use)

A white sign reads 'SPEED LIMIT 30' with a smaller plaque below reading 'SCHOOL DAYS.' On a Saturday morning the school is closed. What does the sign require?

  1. The 30 mph limit applies whenever children are visible
  2. The 30 mph limit applies every day of the week
  3. The 30 mph limit applies only on days when school is in session Correct answer.
  4. The 30 mph limit applies only during posted school hours

Explanation

The 'SCHOOL DAYS' plaque limits the reduced speed to days when school is in session, so it does not apply on a Saturday when school is closed. On other days the general limit for the road applies. Drivers should also slow when children are present regardless of the posted limit.

Question 30Regulatory signs (speed limits, stop/yield, prohibitions, lane use)

A white sign reads 'DO NOT ENTER' and faces a driver at the mouth of a one-way street. What should the driver do?

  1. Turn onto a different street, since travel in that direction is prohibited Correct answer.
  2. Stop, wait for a green light, then enter the one-way street
  3. Proceed slowly and yield to oncoming traffic in the one-way street
  4. Enter and drive against traffic only if no vehicles are visible

Explanation

A DO NOT ENTER sign marks a roadway where travel facing the sign is prohibited, typically the wrong end of a one-way street. The driver must not enter and should choose another route. No signal or gap in traffic makes entry lawful.

Question 31Regulatory signs (speed limits, stop/yield, prohibitions, lane use)

On a road with reversible lanes, a white sign shows a red X over the lane the driver is using. What does this require?

  1. The lane is open to oncoming traffic and the driver may continue
  2. The lane is reserved for buses and carpools
  3. The lane may be used but only at reduced speed
  4. The lane is closed to travel in the driver's direction and must be vacated Correct answer.

Explanation

A red X over a lane means that lane is closed to traffic moving in the driver's direction, so the driver must change lanes as soon as it is safe. A green downward arrow marks lanes open to travel. The X does not indicate a special-use lane or a speed restriction.

Question 32Regulatory signs (speed limits, stop/yield, prohibitions, lane use)

A white sign reads 'LEFT LANE MUST TURN LEFT' above the leftmost of three lanes. A driver in that lane wants to go straight. What must the driver do?

  1. Turn left as the sign directs or change out of that lane before the intersection Correct answer.
  2. Stop in the lane and wait for a gap to move over
  3. Continue straight from that lane while signaling
  4. Turn left and then make a U-turn to return to the intended route

Explanation

A mandatory movement sign assigns a required direction to the lane, so a driver in that lane must turn left. A driver who intends to go straight should move to a through lane before reaching the intersection, where a solid line or channelization may prevent a late change. Signaling does not authorize going straight from a turn-only lane.

Question 33Regulatory signs (speed limits, stop/yield, prohibitions, lane use)

A white sign reads 'NO TRUCKS' with a symbol of a truck. Which vehicle is clearly prohibited by this sign?

  1. A pickup truck used as a personal vehicle
  2. A heavy commercial tractor-trailer rig Correct answer.
  3. A passenger car towing a small utility trailer
  4. A conversion van carrying a family

Explanation

A NO TRUCKS sign is aimed at large commercial vehicles such as tractor-trailers, which are the vehicles the restriction is designed to keep off the road. Light personal vehicles, including pickups and vans, are generally not what the sign targets. Whether a light trailer combination is covered depends on local definitions, but a tractor-trailer is clearly within the prohibition.

Question 34Regulatory signs (speed limits, stop/yield, prohibitions, lane use)

A white sign reads 'NO PARKING 8 AM - 6 PM' on a weekday. A driver wants to leave the car for ten minutes at 7 PM. What does the sign allow?

  1. No parking at any hour on that street
  2. Parking only with hazard lights on
  3. Parking, because the restriction ends at 6 PM Correct answer.
  4. Parking for no more than ten minutes only

Explanation

The sign restricts parking only during the posted hours, so parking after 6 PM is permitted unless another sign applies. A driver should check for additional signs covering other hours or days. Hazard lights do not create parking privileges.

Question 35Regulatory signs (speed limits, stop/yield, prohibitions, lane use)

A white sign reads 'NO STANDING' along a curb. What does this prohibit that a NO PARKING sign does not?

  1. Stopping the vehicle to wait, even briefly, with or without leaving it Correct answer.
  2. Loading or unloading commercial goods only
  3. Driving in the lane adjacent to the curb
  4. Any stopping at all, including to pick up or drop off passengers

Explanation

NO STANDING prohibits a vehicle from remaining stopped to wait, even if the driver stays inside, while NO PARKING only prohibits leaving the vehicle parked. Brief stops to actively load or unload passengers are generally still allowed where standing is banned. The distinction matters because a driver waiting at the curb can violate a NO STANDING sign.

Question 36Regulatory signs (speed limits, stop/yield, prohibitions, lane use)

A white sign shows a red circle with a red slash over a black arrow that curves to the left. What does this sign communicate?

  1. A left curve ahead requires reduced speed
  2. Left turns are prohibited at this location Correct answer.
  3. Left turns are permitted only for local traffic
  4. The left lane ends ahead and traffic must merge

Explanation

A white regulatory sign with a red circle and slash over a black arrow prohibits the maneuver the arrow depicts, so this sign bans left turns. It is not a warning of a curve, which would appear on a yellow diamond sign. Drivers must use another route or turn.

Question 37Regulatory signs (speed limits, stop/yield, prohibitions, lane use)

A white sign reads 'RIGHT LANE MUST TURN RIGHT' but the driver in that lane realizes the intended exit is one block farther. What is the safest lawful action?

  1. Stop in the right lane until traffic clears to change lanes
  2. Turn right as required and reroute from there Correct answer.
  3. Change lanes abruptly across the solid line at the intersection
  4. Proceed straight from the right lane and take the later exit

Explanation

The sign makes a right turn mandatory from that lane, so the driver must comply and then find a legal route back. Making a late or abrupt lane change across a solid line is unsafe and often unlawful. A driver who has entered a mandatory-turn lane should plan to follow it.

Question 38Regulatory signs (speed limits, stop/yield, prohibitions, lane use)

A white sign reads 'KEEP LEFT' and is mounted on a raised traffic island that separates two lanes moving in the same direction. What does the sign require?

  1. Reduce speed to 15 mph while passing the island
  2. Pass to the left side of the island Correct answer.
  3. Pass to the right side of the island
  4. Stop before the island and wait for a gap

Explanation

A KEEP LEFT sign directs traffic to pass on the left side of the object or island it marks. The sign controls which side of the divider a driver uses, not speed or stopping. Drivers should follow the arrow or wording and keep to the indicated side.

Question 39Regulatory signs (speed limits, stop/yield, prohibitions, lane use)

A white sign reads 'ONE WAY' with an arrow pointing left, mounted where a driver is about to turn onto the street. What does the sign establish?

  1. All traffic on that street moves to the left, so the driver must enter and travel in that direction Correct answer.
  2. The left lane of that street is reserved for turning vehicles
  3. The driver must turn left at the next intersection regardless of the street
  4. Traffic on that street may travel in either direction with caution

Explanation

A ONE WAY sign with an arrow establishes that traffic on the street flows only in the direction of the arrow. A driver entering must travel with that flow and must not turn against it. The sign does not create a reserved lane or require a turn at a later intersection.

Question 40Regulatory signs (speed limits, stop/yield, prohibitions, lane use)

A white sign reads 'NO U-TURN' at a divided highway median crossover. Why is this restriction especially important at this location?

  1. The crossover may carry high-speed traffic in both directions, making a U-turn hazardous Correct answer.
  2. A U-turn would trigger the traffic signal to change against the driver
  3. U-turns are always illegal on any road in every state
  4. The median physically prevents any vehicle from turning around

Explanation

Median crossovers on divided highways often expose a driver to fast traffic approaching from both directions, so a U-turn there is especially risky and is prohibited by the sign. The restriction addresses a specific hazard rather than a universal ban. Drivers should continue to an interchange or posted turnaround.

Question 41Regulatory signs (speed limits, stop/yield, prohibitions, lane use)

A white sign reads 'PEDESTRIANS PROHIBITED' on a limited-access highway shoulder. What does this mean for a pedestrian walking there?

  1. Walking is allowed if the pedestrian wears reflective clothing
  2. Walking is allowed only on the shoulder
  3. Walking is allowed only during daylight
  4. Walking along that roadway is unlawful Correct answer.

Explanation

A PEDESTRIANS PROHIBITED sign makes it unlawful for pedestrians to walk along that roadway, which is typical of limited-access highways where vehicles travel at high speed. The prohibition is not limited to certain hours or clothing. Drivers should watch for pedestrians anyway where they may be stranded.

Question 42Regulatory signs (speed limits, stop/yield, prohibitions, lane use)

A white sign reads 'SPEED LIMIT 65' on an interstate, and a driver is passing a slower vehicle. May the driver exceed 65 mph to complete the pass?

  1. Yes, if the driver uses the left lane and signals
  2. Yes, briefly, if the pass is completed within a quarter mile
  3. Yes, up to 10 mph over the limit while passing
  4. No, the posted limit applies regardless of the passing maneuver Correct answer.

Explanation

A posted speed limit is the maximum lawful speed at all times, including while passing. There is no passing exception that allows exceeding the limit. A driver who cannot complete a pass within the limit should wait for a safer opportunity.

Question 43Regulatory signs (speed limits, stop/yield, prohibitions, lane use)

A white sign reads 'TRUCKS USE LOW GEAR' on a long downgrade. What is the purpose of this regulatory instruction?

  1. To require trucks to stop at the bottom of the grade
  2. To require trucks to travel at the lowest posted speed on the grade
  3. To keep trucks from using the left lane on the descent
  4. To help heavy vehicles control speed by engine braking on the steep descent Correct answer.

Explanation

On steep downgrades, heavy vehicles can overheat or lose the effectiveness of their service brakes, so the sign directs them to use a low gear for engine braking. The instruction concerns gearing and speed control, not lane use or a required stop. Following it reduces the risk of a runaway vehicle.

Question 44Regulatory signs (speed limits, stop/yield, prohibitions, lane use)

A white sign shows a red slash over a symbol of a vehicle carrying hazardous materials, posted at a tunnel entrance. What does the sign require?

  1. Hazardous cargo vehicles may enter only at night
  2. Hazardous cargo vehicles may enter after stopping to notify authorities
  3. Hazardous cargo vehicles may enter if escorted by a pilot car
  4. Vehicles carrying the indicated hazardous cargo must use another route Correct answer.

Explanation

A white sign with a red slash over a hazmat symbol prohibits vehicles carrying the indicated hazardous materials from the facility, such as a tunnel where a release would be catastrophic. Those vehicles must find an alternate route. No time-of-day or escort exception is created by the sign itself.

Question 45Regulatory signs (speed limits, stop/yield, prohibitions, lane use)

A white sign reads 'NO PASSING ZONE' with a black arrow pointing left on a two-lane road. What does the sign require of a driver behind a slow-moving vehicle?

  1. Remain behind the vehicle until the restriction ends Correct answer.
  2. Pass after sounding the horn to warn the vehicle ahead
  3. Pass only if the vehicle ahead is a truck
  4. Pass on the shoulder if it is paved

Explanation

A NO PASSING ZONE sign prohibits passing in the direction indicated until a sign or marking ends the zone. The driver must stay behind the slower vehicle even if impatient. Passing on the shoulder or relying on a horn is unsafe and does not satisfy the restriction.

Question 46Regulatory signs (speed limits, stop/yield, prohibitions, lane use)

A white sign reads 'MINIMUM SPEED 45' in the left lane of a freeway. A driver cannot safely maintain 45 mph because of heavy traffic. What is the appropriate response?

  1. Move to a lane where the slower pace is permitted, if one exists, or continue at a safe speed for conditions Correct answer.
  2. Speed up to 45 mph regardless of the traffic ahead
  3. Stay in the left lane and turn on hazard lights
  4. Stop on the shoulder until traffic clears

Explanation

Minimum speed signs are intended to keep slow traffic out of lanes meant for faster flow, but no driver may travel at a speed unsafe for conditions. The driver should move to a permitted lane if possible and otherwise proceed at a safe speed. Stopping on the shoulder or using hazard lights does not resolve the situation.

Question 47Regulatory signs (speed limits, stop/yield, prohibitions, lane use)

A white sign reads 'NO HORN' with a red slash over a horn symbol, posted near a hospital. What does the sign require?

  1. Never sound the horn under any circumstance
  2. Refrain from sounding the horn except to avoid an immediate collision Correct answer.
  3. Sound the horn once when entering the zone
  4. Sound the horn only when passing another vehicle

Explanation

A NO HORN sign restricts unnecessary horn use in a quiet zone such as a hospital area, but a horn may still be used to warn of imminent danger. The sign targets avoidable noise, not emergency warnings. Drivers should rely on it to keep the area quiet.

Question 48Regulatory signs (speed limits, stop/yield, prohibitions, lane use)

A white sign reads 'CENTER LANE LEFT TURNS ONLY' on a road with a shared middle lane marked by solid and broken yellow lines. How is that lane used?

  1. By traffic from either direction preparing to turn left Correct answer.
  2. By traffic in both directions as a regular travel lane
  3. By traffic turning right into driveways on the right
  4. By through traffic passing slower vehicles

Explanation

A center lane marked for left turns only is a two-way left-turn lane shared by traffic from both directions preparing to turn. It is not a through or passing lane, and drivers should enter it only shortly before turning. Using it to travel any distance is unsafe and unlawful.

Question 49Regulatory signs (speed limits, stop/yield, prohibitions, lane use)

A white sign reads 'BUS ONLY' above a lane marked with the word 'BUS.' Which driver may lawfully use that lane during posted hours?

  1. A bus driver operating in service on that route Correct answer.
  2. A driver making a right turn two blocks ahead
  3. Any driver when general traffic is congested
  4. A rideshare driver carrying paying passengers

Explanation

A BUS ONLY lane is reserved for buses operating in service, and other vehicles may not use it for travel. General congestion, a distant turn, or carrying passengers for hire does not create an exception. Drivers should check for posted hours and any turn allowances before entering.

Question 50Regulatory signs (speed limits, stop/yield, prohibitions, lane use)

A white sign reads 'WEIGHT LIMIT 10 TONS' on a bridge approach. A driver of a loaded truck is unsure of the vehicle's gross weight. What should the driver do?

  1. Cross only when no other vehicles are on the bridge
  2. Cross in the center of the bridge to distribute weight
  3. Determine the weight before crossing and use another route if over the limit Correct answer.
  4. Cross slowly to reduce the load on the bridge

Explanation

A weight limit sign restricts vehicles above the stated gross weight from using the structure, regardless of speed or lane position. The driver must know the loaded weight and find an alternate route if it exceeds the limit. Slow or centered crossing does not make an overweight vehicle lawful.