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Guam Driver License Test study materials
Guam Driver License Test study resources

Guam Driver License Test practice questions

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Question 1Traffic Signs, Signals, and Road Markings

A steady red traffic light means you must come to a complete stop. When may you proceed?

  1. Immediately, if no vehicles are visible in either direction
  2. Only after the light turns green, with no exceptions
  3. After slowing to a rolling stop and checking for traffic
  4. After stopping, when the way is clear and you have the right of way Correct answer.

Explanation

A steady red signal requires a full stop before the intersection or limit line. You may then proceed only when it is safe and you may lawfully do so, such as after a complete stop at a red before turning where permitted or after the light changes.

Question 2Traffic Signs, Signals, and Road Markings

What does a flashing red traffic signal require a driver to do?

  1. Treat it as a green light if turning right
  2. Slow down and proceed with caution without stopping
  3. Yield only to vehicles coming from the right
  4. Stop completely, then proceed when it is safe Correct answer.

Explanation

A flashing red signal operates like a stop sign: come to a complete stop, then proceed when the way is clear and you have the right of way.

Question 3Traffic Signs, Signals, and Road Markings

A flashing yellow traffic light tells you to:

  1. Proceed with caution after yielding to pedestrians only
  2. Speed up to clear the intersection
  3. Slow down and proceed carefully, watching for hazards Correct answer.
  4. Stop and wait for a green light

Explanation

A flashing yellow signal warns drivers to slow down and proceed with caution while scanning for crossing traffic, pedestrians, and other hazards. It does not require a stop.

Question 4Traffic Signs, Signals, and Road Markings

A solid yellow traffic light means:

  1. You must always stop immediately, even in the intersection
  2. The light is about to turn red, so stop if you can do so safely Correct answer.
  3. The light is about to turn green, so prepare to accelerate
  4. You may proceed only if turning left

Explanation

A steady yellow warns that the signal is changing to red. Stop if you can do so safely; if you are too close to stop safely, proceed through with caution.

Question 5Traffic Signs, Signals, and Road Markings

A red arrow pointing left means:

  1. Left turns are permitted after yielding
  2. You may turn left after a complete stop
  3. Left turns are prohibited in the direction of the arrow Correct answer.
  4. The arrow applies only to bicycles

Explanation

A red arrow prohibits movement in the direction it points. You must wait until a green arrow or other permissive signal allows that movement.

Question 6Traffic Signs, Signals, and Road Markings

You are approaching an intersection where the traffic signal is dark because of a power failure. How should you treat the intersection?

  1. As a four-way stop, stopping and yielding as at a stop sign Correct answer.
  2. As a yield sign only for turning vehicles
  3. As a green light for the busier road
  4. As an uncontrolled intersection with no rules

Explanation

When a signal is not functioning, treat the intersection as an all-way stop. Come to a complete stop and follow right-of-way rules before proceeding.

Question 7Traffic Signs, Signals, and Road Markings

What shape is a standard stop sign?

  1. An octagon Correct answer.
  2. An upward-pointing triangle
  3. A circle
  4. A rectangle

Explanation

Stop signs are the only standard eight-sided (octagonal) signs, which makes them recognizable from the back and in poor visibility.

Question 8Traffic Signs, Signals, and Road Markings

A downward-pointing triangular sign with a red border means:

  1. Stop completely before proceeding
  2. No passing zone
  3. Yield the right of way to traffic and pedestrians Correct answer.
  4. Railroad crossing ahead

Explanation

The inverted triangle is the yield sign. Slow down and give the right of way to traffic on the intersecting road and to pedestrians before entering.

Question 9Traffic Signs, Signals, and Road Markings

A round yellow sign with a black X and the letters RR indicates:

  1. A school crossing zone
  2. A construction detour
  3. A railroad crossing ahead Correct answer.
  4. A restricted parking area

Explanation

The round yellow railroad advance warning sign alerts drivers that tracks are ahead, so they should slow down, look, and listen before crossing.

Question 10Traffic Signs, Signals, and Road Markings

A five-sided (pentagon-shaped) yellow sign warns of:

  1. A school zone or school crossing Correct answer.
  2. A winding road ahead
  3. A pedestrian crossing
  4. A railroad crossing

Explanation

The pentagon shape is reserved for school-related warnings, such as school zones and school crossings, telling drivers to slow down and watch for children.

Question 11Traffic Signs, Signals, and Road Markings

A yellow diamond-shaped sign is generally used to:

  1. Mark a parking regulation
  2. State a legal requirement such as a speed limit
  3. Provide directions to a city or service
  4. Give warning of a road condition or hazard ahead Correct answer.

Explanation

Yellow diamonds are warning signs. They alert drivers to conditions such as curves, intersections, or other hazards so they can adjust speed and position.

Question 12Traffic Signs, Signals, and Road Markings

An orange diamond-shaped sign is most likely to warn of:

  1. A work zone or construction hazard Correct answer.
  2. A scenic overlook
  3. A school bus stop
  4. A hospital zone

Explanation

Orange signs mark temporary conditions such as construction and maintenance work zones. Drivers should slow down and watch for workers and equipment.

Question 13Traffic Signs, Signals, and Road Markings

A white rectangular sign with black lettering that reads SPEED LIMIT 25 is best described as:

  1. A regulatory sign Correct answer.
  2. A construction sign
  3. A guide sign
  4. A warning sign

Explanation

White rectangular signs with black text convey regulations that drivers must obey, such as speed limits, lane use, and turning rules.

Question 14Traffic Signs, Signals, and Road Markings

What does a solid yellow center line on a two-lane road indicate?

  1. Traffic in both directions must not cross the line to pass Correct answer.
  2. The lane is reserved for buses
  3. The road becomes one-way ahead
  4. Passing is permitted in both directions

Explanation

A solid yellow center line marks the left edge of your lane and means you may not cross it to pass. Yellow lines separate traffic moving in opposite directions.

Question 15Traffic Signs, Signals, and Road Markings

A broken (dashed) yellow center line means:

  1. You must stay in the left lane
  2. You may cross the line to pass when it is safe Correct answer.
  3. Passing is prohibited in your direction
  4. The line marks a pedestrian area

Explanation

A dashed yellow line may be crossed to pass or make a left turn when it is safe and legal. Yellow lines separate opposing traffic flows.

Question 16Traffic Signs, Signals, and Road Markings

You are on a two-lane road with a double yellow line: one solid line on your side and one broken line on the other side. What does this mean for you?

  1. Neither direction may pass
  2. You may pass only if you stay under 25 mph
  3. You may pass because the other side has a broken line
  4. You may pass if you cross only the broken line Correct answer.

Explanation

With a solid line on your side and a broken line on the other, passing is prohibited for your direction but permitted for traffic on the side with the broken line. You may not cross the solid line to pass.

Question 17Traffic Signs, Signals, and Road Markings

What do double solid white lines between lanes traveling in the same direction indicate?

  1. Lane changes are permitted at any time
  2. The lanes merge into one ahead
  3. You may cross only to make a left turn
  4. Crossing the lines to change lanes is discouraged or prohibited Correct answer.

Explanation

Double solid white lines separate same-direction lanes and indicate that crossing them for a lane change is discouraged or prohibited. Drivers should stay in their lane.

Question 18Traffic Signs, Signals, and Road Markings

A white line painted across your lane just before an intersection is most likely:

  1. A crosswalk boundary
  2. A lane divider for turning traffic
  3. A marking for a bicycle lane
  4. A stop line showing where to stop for the signal or sign Correct answer.

Explanation

A stop line is a solid white bar across your lane that marks where your vehicle should stop for a stop sign or traffic signal. Stop before the line, not in the crosswalk.

Question 19Traffic Signs, Signals, and Road Markings

What does a white diamond symbol painted in a lane typically indicate?

  1. A lane reserved for high-occupancy vehicles or special use Correct answer.
  2. A pedestrian crossing zone
  3. A no-parking zone
  4. A lane that ends ahead

Explanation

The white diamond marks a reserved lane, such as an HOV or carpool lane, which only qualifying vehicles may use during posted hours.

Question 20Traffic Signs, Signals, and Road Markings

You see a solid white line along the right edge of the roadway. Its main purpose is to:

  1. Mark the right edge of the travel lane Correct answer.
  2. Indicate a lane for oncoming traffic
  3. Mark the center of the road
  4. Show where passing is allowed

Explanation

A solid white edge line marks the right boundary of the roadway or travel lane, helping drivers stay in lane and showing where the shoulder begins.

Question 21Traffic Signs, Signals, and Road Markings

A flashing yellow arrow at an intersection means:

  1. Left turns are prohibited
  2. You have a protected left turn
  3. You may turn left after yielding to oncoming traffic and pedestrians Correct answer.
  4. You must stop and wait for a green arrow

Explanation

A flashing yellow arrow permits the turn but does not protect it. You must yield to oncoming traffic and pedestrians before completing the turn.

Question 22Traffic Signs, Signals, and Road Markings

A green arrow pointing left, displayed with a solid green light, means:

  1. Left turns are prohibited
  2. You may turn left only after yielding to oncoming traffic
  3. You have a protected left turn and oncoming traffic is stopped Correct answer.
  4. You must wait for the green light to turn yellow

Explanation

A green arrow gives a protected movement; oncoming traffic is held by a red light, so you may turn without yielding to it, though you should still watch for pedestrians.

Question 23Traffic Signs, Signals, and Road Markings

You approach a crosswalk where a pedestrian is waiting to cross, but there is no signal or stop sign. What does the law generally require?

  1. You may proceed if you sound your horn
  2. You must yield and let the pedestrian cross Correct answer.
  3. You may proceed if you slow to 10 mph
  4. You have the right of way because you are in a vehicle

Explanation

Drivers must yield to pedestrians in a crosswalk, and many jurisdictions require yielding to a pedestrian waiting to cross at a marked crosswalk. Pedestrians have the right of way in these situations.

Question 24Traffic Signs, Signals, and Road Markings

A sign showing a black silhouette of a pedestrian inside a yellow diamond warns you that:

  1. Pedestrians are prohibited
  2. The road is closed to vehicles
  3. A pedestrian crossing is ahead Correct answer.
  4. A school bus stop is ahead

Explanation

The yellow pedestrian warning sign alerts drivers that a crossing area is ahead, so they should slow down and watch for people entering the roadway.

Question 25Traffic Signs, Signals, and Road Markings

You are driving and see a yellow diamond sign showing a curve with an advisory speed plate reading 35 MPH beneath it. What should you do?

  1. Stop before the curve and wait for a clear lane
  2. Maintain the posted speed limit if you feel confident
  3. Accelerate to clear the curve quickly
  4. Reduce speed to about 35 mph or less before entering the curve Correct answer.

Explanation

An advisory speed plate on a warning sign suggests a safe speed for the condition shown, such as a curve. You should slow to that speed or below before entering it.

Question 26Traffic Signs, Signals, and Road Markings

A steady red traffic light is displayed and a sign beside it reads NO TURN ON RED. What must you do?

  1. Turn right only after the vehicle ahead of you turns
  2. Stop, then turn right after yielding to traffic
  3. Stop and remain stopped until the light turns green Correct answer.
  4. Slow down and proceed if the road is clear

Explanation

A steady red light requires a full stop. The posted NO TURN ON RED sign removes the usual permission to turn right after stopping, so you must wait for a green indication before entering the intersection.

Question 27Traffic Signs, Signals, and Road Markings

A steady yellow traffic light appears as you approach an intersection. What is the correct action?

  1. Continue at the same speed without checking traffic
  2. Speed up to clear the intersection before red
  3. Stop, then continue through if no one is watching
  4. Treat it as a warning and stop if you can do so safely Correct answer.

Explanation

A steady yellow light warns that the signal is about to turn red. The safe response is to stop if you can do so safely; if you are too close to stop safely, you may proceed through with caution.

Question 28Traffic Signs, Signals, and Road Markings

A sign shaped like an upright triangle with a red border and the word YIELD means you should:

  1. Stop completely before entering the roadway
  2. Wait for a green light before proceeding
  3. Merge without adjusting your speed
  4. Slow down and give the right of way to cross traffic Correct answer.

Explanation

A yield sign requires you to slow down and give the right of way to traffic on the intersecting road. You need not stop unless traffic conditions make stopping necessary to yield safely.

Question 29Traffic Signs, Signals, and Road Markings

You see a yellow diamond sign with a black arrow curving to the right. What does it tell you?

  1. A right turn is prohibited at the next corner
  2. The road curves to the right ahead Correct answer.
  3. A right lane ends ahead
  4. A one-way road begins to the right

Explanation

Yellow diamond warning signs alert drivers to changes in road conditions ahead. A curved arrow on such a sign indicates that the roadway curves in the direction shown, so you should slow down before reaching the curve.

Question 30Traffic Signs, Signals, and Road Markings

A yellow diamond sign shows a black symbol of a car with wavy skid marks behind it. This sign warns of:

  1. Loose gravel on the shoulder
  2. A slippery road surface ahead Correct answer.
  3. A vehicle inspection checkpoint
  4. A steep downhill grade

Explanation

The car-with-skid-marks symbol is the standard warning for a slippery surface, often caused by rain, ice, or oil. Drivers should reduce speed and avoid sudden braking or steering on such pavement.

Question 31Traffic Signs, Signals, and Road Markings

A rectangular white sign with black lettering reading ONE WAY and an arrow means:

  1. The road is closed to through traffic
  2. Traffic on that road moves only in the direction of the arrow Correct answer.
  3. Parking is permitted in one direction
  4. The lane is reserved for buses only

Explanation

ONE WAY signs are regulatory signs informing drivers that all traffic on that roadway flows in the direction indicated by the arrow. Entering against the arrow is illegal and dangerous.

Question 32Traffic Signs, Signals, and Road Markings

You are driving in the left lane of a divided highway and see a yellow diamond sign with a divided-highway symbol. What does it indicate?

  1. A median opening for U-turns is ahead
  2. The divided highway ends and two-way traffic begins ahead Correct answer.
  3. A passing lane begins ahead
  4. The left lane will become an exit lane

Explanation

The divided-highway-ends warning tells drivers that the separation between opposing traffic is about to end, so two-way traffic will share the roadway. Drivers should be alert for oncoming vehicles and adjust position accordingly.

Question 33Traffic Signs, Signals, and Road Markings

A solid white line separates two lanes traveling in the same direction. What does it mean for changing lanes?

  1. Lane changes are permitted only by buses
  2. Lane changes are prohibited at all times
  3. Lane changes are encouraged whenever traffic is light
  4. Lane changes are discouraged and should be made only when necessary Correct answer.

Explanation

A solid white line between same-direction lanes marks a boundary where lane changing is discouraged, though it is not an absolute prohibition. Drivers should change lanes only when necessary and with proper signaling.

Question 34Traffic Signs, Signals, and Road Markings

What does a yellow diamond sign with a black symbol of two arrows merging into one indicate?

  1. A two-way road begins ahead
  2. Two lanes will merge into one ahead Correct answer.
  3. A roundabout is ahead
  4. Traffic will split into two lanes ahead

Explanation

The merge warning symbol shows that two lanes of traffic will come together into a single lane. Drivers in the ending lane should adjust speed and position early to merge safely.

Question 35Traffic Signs, Signals, and Road Markings

You are approaching an intersection and see a flashing yellow signal overhead. How should you proceed?

  1. Wait for the signal to turn green
  2. Stop completely before entering the intersection
  3. Continue at full speed because you have the right of way
  4. Slow down and proceed with caution while yielding as needed Correct answer.

Explanation

A flashing yellow signal means proceed with caution. It does not require a stop, but you must slow down, watch for cross traffic and pedestrians, and yield when necessary.

Question 36Traffic Signs, Signals, and Road Markings

A white diamond symbol painted in a traffic lane indicates that the lane is:

  1. Open only to trucks making deliveries
  2. Reserved for high-occupancy vehicles or a special use Correct answer.
  3. A lane where parking is allowed
  4. Closed to all traffic ahead

Explanation

The white diamond pavement symbol marks a lane reserved for a special class of vehicle, most commonly high-occupancy vehicles, and sometimes bicycles or transit. Signs posted nearby state the specific restriction and hours.

Question 37Traffic Signs, Signals, and Road Markings

You are driving at night and see pavement markings that appear to glow or reflect your headlights. What is the main purpose of these reflective markings?

  1. To indicate that the road is under construction
  2. To warn that the speed limit has increased
  3. To make lane and edge lines visible in darkness and bad weather Correct answer.
  4. To show where parking is permitted

Explanation

Reflective pavement markings and raised markers are designed to catch headlights so lane boundaries and road edges stay visible at night and in poor weather. They help drivers maintain lane position when visibility is reduced.

Question 38Traffic Signs, Signals, and Road Markings

A yellow diamond sign shows a black symbol of a traffic signal with a red light illuminated. This sign warns that:

  1. Only pedestrians must obey the signal ahead
  2. The signal ahead is green for cross traffic only
  3. The signal ahead is broken and you should proceed
  4. A traffic signal is ahead and you should be prepared to stop Correct answer.

Explanation

The signal-ahead warning sign alerts drivers that a traffic light controls the intersection ahead, often where sight distance is limited. Drivers should slow down and be ready to stop if the light is red.

Question 39Traffic Signs, Signals, and Road Markings

You approach an intersection with a green light, but traffic is backed up and blocking the far side of the intersection. What should you do?

  1. Wait behind the stop line until space is available on the far side Correct answer.
  2. Sound your horn until traffic moves
  3. Drive around the blockage using the shoulder
  4. Enter the intersection and wait in the crosswalk area

Explanation

Even with a green light, you should not enter an intersection unless you can clear it. Blocking the intersection obstructs cross traffic and pedestrians, so wait behind the stop line until there is room on the far side.

Question 40Traffic Signs, Signals, and Road Markings

You are driving on a two-lane road and see a solid yellow line on your side of the center line. What does this mean for passing?

  1. Passing is allowed only if you flash your headlights
  2. Passing is permitted when the road ahead is clear
  3. Passing is allowed only at night
  4. Passing is prohibited in your direction of travel Correct answer.

Explanation

A solid yellow center line on your side marks the left edge of your lane and means you may not cross it to pass. Yellow lines separate traffic moving in opposite directions, and a solid line on your side bars passing in your direction. Passing is only permitted when the line on your side is broken.

Question 41Right-of-Way Rules and Intersections

You approach a four-way stop at the same time as a vehicle on your right. Who has the right of way?

  1. You go first because you arrived at the same moment
  2. The vehicle on your left goes first
  3. Whoever sounds a horn first goes first
  4. The vehicle on your right goes first Correct answer.

Explanation

At an all-way stop, when two vehicles arrive at the same time, the driver on the left must yield to the driver on the right. The vehicle on your right therefore proceeds first.

Question 42Right-of-Way Rules and Intersections

A traffic signal is dark because of a power failure at a busy intersection. How should you proceed?

  1. Wait until a police officer arrives before moving
  2. Yield only to vehicles coming from the left
  3. Treat the intersection as an all-way stop Correct answer.
  4. Proceed through without slowing because the light is off

Explanation

When a signal is not functioning, the intersection is handled like a stop-sign intersection: stop, then yield as at an all-way stop. Proceeding without stopping is dangerous and unlawful.

Question 43Right-of-Way Rules and Intersections

You are turning left at an intersection with a circular green light and oncoming traffic. What must you do?

  1. Turn immediately because green means you have priority
  2. Yield to oncoming traffic before completing the turn Correct answer.
  3. Wait for a green arrow before turning at all
  4. Turn only after the oncoming cars have stopped for a red light

Explanation

A circular green light permits the turn but does not protect it. You must yield to oncoming vehicles and to pedestrians before completing a left turn.

Question 44Right-of-Way Rules and Intersections

A pedestrian is crossing the roadway in a marked crosswalk at an intersection with no traffic signal. What is required of you?

  1. Continue if you can pass behind the pedestrian
  2. Stop and yield to the pedestrian Correct answer.
  3. Yield only if the pedestrian has already reached your lane
  4. Sound your horn so the pedestrian hurries

Explanation

Drivers must yield to pedestrians in a marked crosswalk, and often to those in an unmarked crosswalk at an intersection. You should stop and let the pedestrian cross safely.

Question 45Right-of-Way Rules and Intersections

An emergency vehicle with lights and siren approaches from behind while you are in an intersection. What should you do?

  1. Stop immediately where you are inside the intersection
  2. Speed up to stay ahead of the emergency vehicle
  3. Clear the intersection first, then pull over to the right Correct answer.
  4. Move to the left lane and continue at the same speed

Explanation

You should yield to emergency vehicles, but stopping inside an intersection blocks traffic. Finish crossing, then pull to the right and stop until the vehicle passes.

Question 46Right-of-Way Rules and Intersections

You are entering a roundabout. Who must yield?

  1. You yield to traffic already circulating in the roundabout Correct answer.
  2. No one yields because roundabouts have no right-of-way rules
  3. Circulating traffic yields to entering vehicles
  4. The vehicle on the left always yields, entering or not

Explanation

At a roundabout, entering vehicles yield to traffic already in the circle. Once inside, you proceed counterclockwise and yield to pedestrians at the crossings.

Question 47Right-of-Way Rules and Intersections

You are on a minor road approaching a T-intersection where the through road continues left and right. What is the rule?

  1. Traffic on the ending road has the right of way
  2. The first vehicle to reach the intersection always goes first
  3. Traffic turning right always has priority over through traffic
  4. Traffic on the through road has the right of way Correct answer.

Explanation

At a T-intersection, the road that ends must yield to traffic on the continuing through road. You may turn only when there is a safe gap in traffic from both directions.

Question 48Right-of-Way Rules and Intersections

A school bus with flashing red lights is stopped on the opposite side of a divided highway with a median. Are you required to stop?

  1. Yes, because red flashing lights always require all traffic to stop
  2. Yes, but only if children are visible near the road
  3. No, because a divided highway with a median separates the directions Correct answer.
  4. No, because the bus is facing the other direction

Explanation

On a divided highway with a median, traffic on the opposite side of the median need not stop for a school bus with flashing red lights. Traffic traveling in the same direction as the bus must stop.

Question 49Right-of-Way Rules and Intersections

You want to turn left into a driveway across a sidewalk where a pedestrian is walking. What must you do?

  1. Turn only if the pedestrian is more than ten feet away
  2. Yield to the pedestrian before crossing the sidewalk Correct answer.
  3. Honk so the pedestrian stops for you
  4. Turn first because vehicles have priority over sidewalks

Explanation

Pedestrians on a sidewalk have the right of way over vehicles crossing it to enter or leave a driveway. Wait until the sidewalk is clear before turning.

Question 50Right-of-Way Rules and Intersections

Two vehicles reach an uncontrolled intersection at about the same time, one going straight and one turning left from the opposite direction. Who goes first?

  1. The vehicle that signals first
  2. The vehicle going straight Correct answer.
  3. The larger vehicle
  4. The vehicle turning left

Explanation

A driver turning left must yield to oncoming traffic going straight or turning right. The through vehicle therefore proceeds first.