Guam Driver License Test key terms

A sign that tells drivers what they must do or must not do, such as stop, yield, speed limits, or turning restrictions. These signs are usually white with black or red markings and are enforceable by law.

A sign that alerts drivers to upcoming hazards or changes in road conditions, such as curves, intersections, or pedestrian crossings. Most are yellow diamonds with black symbols, though some use other colors.

A sign that provides information such as route numbers, destinations, distances, or services. Guide signs are typically green, blue, or brown and help drivers navigate rather than regulate behavior.

A red-and-white triangular sign requiring drivers to slow down and give the right-of-way to traffic on the intersecting road or to pedestrians. A driver must stop if necessary before entering the conflicting path.

A pavement marking that separates traffic moving in opposite directions. A solid yellow line means passing is prohibited for traffic on that side; a double solid yellow line prohibits passing in both directions.

A dashed yellow pavement marking between opposing traffic lanes that permits passing when safe. Drivers may cross it to pass only when visibility and traffic conditions allow a safe maneuver.

A marked or unmarked portion of roadway designated for pedestrians to cross. Drivers must yield to pedestrians in a crosswalk, and passing another vehicle stopped at a crosswalk is generally prohibited.

An electrically operated light that controls traffic flow at intersections. Standard colors are red for stop, yellow for caution and preparation to stop, and green for proceed when the way is clear.

A traffic light that flashes rather than showing a steady color. A flashing red light requires a full stop before proceeding; a flashing yellow light means slow down and proceed with caution.

A rule allowing a driver to turn right after a complete stop at a red light, unless a sign prohibits it. The driver must yield to pedestrians and cross traffic before turning.

The legal privilege of one road user to proceed before others in a given situation. Right-of-way is granted by rules and signals, and drivers must yield when the law requires rather than assume it.

An intersection where all approaching traffic must stop. Vehicles proceed in the order they arrived; if two arrive at the same time, the driver on the left yields to the driver on the right.

A red octagonal sign requiring a complete stop at the marked line or before the crosswalk. The driver must then yield to pedestrians and cross traffic before proceeding when safe.

An intersection with no signs or signals controlling the right-of-way. Drivers must slow down, be prepared to stop, and yield to vehicles already in the intersection or approaching from the right.

A circular intersection where traffic flows counterclockwise around a central island. Entering drivers yield to vehicles already in the circle and do not stop inside it unless avoiding a hazard.

The space a driver keeps behind the vehicle ahead, commonly measured with the three-second rule. Increasing distance in rain, darkness, or behind large vehicles gives more time to react.

A method of maintaining a safe following distance by counting seconds between the vehicle ahead passing a fixed point and your own vehicle reaching it. Add more seconds in poor conditions.

Driving too closely behind another vehicle, leaving insufficient time to stop if it slows suddenly. Tailgating is a leading cause of rear-end collisions and is unsafe and often illegal.

An area around a vehicle that cannot be seen in the mirrors. Drivers should check blind spots by turning their head before changing lanes, and avoid lingering in another driver's blind spot.

A style of driving that anticipates hazards and assumes other road users may make mistakes. It involves scanning ahead, keeping escape space, and reacting early to avoid collisions.

The maximum legal speed permitted on a given road under normal conditions. Driving faster than the posted limit is illegal, and drivers must also slow below it when conditions require.

The principle that a driver must never travel faster than is safe for current conditions, regardless of the posted limit. Rain, traffic, and poor visibility can require speeds well below the maximum.

A regulatory sign showing the maximum legal speed for that road. Drivers must obey it and reduce speed further when weather, road, or traffic conditions make the posted speed unsafe.

The percentage of alcohol in a person's bloodstream, used to measure impairment. Driving with a BAC at or above the legal limit is a criminal offense, and lower limits often apply to drivers under 21.

The legal principle that by driving on public roads a person agrees to submit to a chemical test when lawfully requested by police. Refusing a test can lead to license penalties even without a conviction.

The offense of operating a motor vehicle while impaired by alcohol or drugs to a degree that makes safe driving impossible. It carries serious penalties including fines, license suspension, and possible jail time.

A person traveling on foot, including someone using a wheelchair or walking a bicycle. Drivers must yield to pedestrians in crosswalks and exercise extra care near schools and busy areas.

The concept that drivers must safely coexist with pedestrians, cyclists, motorcyclists, and large vehicles. It means giving adequate space, checking blind spots, and yielding when required.

An area where stopping or leaving a vehicle is prohibited, often marked by signs, curbs, or pavement markings. Parking there can result in a citation or towing and may block traffic or emergency access.

Halting a vehicle temporarily while a driver remains available to move it, such as waiting to pick up a passenger. Standing rules are stricter than parking rules and often prohibited in no-stopping areas.

The required distance a vehicle must be parked away from a fire hydrant so firefighters can access it. Parking too close is illegal and can delay emergency response.

A restraint device that holds occupants in their seats during a crash. Guam law requires drivers and passengers to use safety belts, and children must use appropriate child restraints.

A specially designed seat or booster that secures a young child properly in a vehicle. It must match the child's age and size and be installed according to the manufacturer's instructions.

The official record and documentation that a vehicle is legally registered for use on public roads. Drivers must carry proof of registration and keep plates and stickers current.

Documentation showing a vehicle has the liability coverage required by law. Drivers must be able to show it when requested by law enforcement or after a crash.

A written record of a traffic crash filed with the appropriate agency. Drivers involved in crashes causing injury, death, or significant property damage may be required to report it.

Leaving the scene of a crash without stopping to provide identification and assistance as required by law. It is a serious offense, especially when someone is injured.

Loss of tire contact with the road when water builds up between them, causing the vehicle to slide. Drivers should slow down in heavy rain and avoid sudden braking or steering.

Guam's graduated licensing rules set minimum ages and requirements for learner permits and provisional licenses before a full driver license is issued. Applicants must pass knowledge and road tests.