Liberia Driver's License Written Examination study materials
Liberia Driver's License Written Examination study resources

Liberia Driver's License Written Examination key terms

Liberia Driver's License Written Examination · Get comfortable with the vocabulary.

Stop sign

A red octagonal sign that requires a driver to come to a complete halt at the marked stop line or before entering the intersection, then yield to traffic before proceeding.

Related: Stop line, Right-of-way, Four-way stop
Yield sign

An inverted triangular sign directing a driver to slow down and give way to traffic on the intersecting road, stopping only if necessary to avoid conflict.

Related: Right-of-way, Merging
Stop line

A solid white line painted across a lane showing the exact point where a vehicle must halt for a stop sign, traffic signal, or pedestrian crossing.

Related: Stop sign, Crosswalk, Traffic signal
Crosswalk

A marked portion of the roadway, shown by parallel white lines or stripes, where pedestrians cross and where drivers must yield or stop for them.

Related: Pedestrian, Stop line
Broken white line

A dashed white lane marking that separates traffic moving in the same direction and may be crossed when it is safe to change lanes.

Related: Solid white line, Lane change
Solid yellow line

A continuous yellow center line that marks the left edge of traffic flow and generally may not be crossed to overtake or pass another vehicle.

Related: Broken white line, Overtaking
Traffic signal

An electrically operated light, such as red, amber, or green, that controls the movement of vehicles and pedestrians at an intersection or crossing.

Related: Steady red light, Flashing amber light, Stop line
Steady red light

A continuous red signal meaning vehicles must stop behind the stop line and remain stopped until the light turns green, unless a permitted turn is allowed.

Related: Traffic signal, Stop line
Flashing amber light

A blinking yellow signal warning drivers to slow down and proceed with caution, checking carefully for crossing traffic or hazards before continuing.

Related: Traffic signal, Steady red light
Right-of-way

The legal priority to move first through a junction or narrow passage; it is given by rules or signs and should never be assumed or demanded aggressively.

Related: Four-way stop, Yield sign, Roundabout
Four-way stop

An intersection where all approaches have stop signs; drivers stop fully and proceed in the order they arrived, yielding to the vehicle on the right if arriving together.

Related: Stop sign, Right-of-way
Roundabout

A circular intersection where traffic flows in one direction around a central island; entering drivers yield to vehicles already circulating inside.

Related: Right-of-way, Yield sign
Merging

Joining a stream of moving traffic from an entrance lane; the merging driver must adjust speed and yield to vehicles already on the main road.

Related: Yield sign, Following distance
Overtaking

Passing a slower vehicle ahead, normally on the left, only when lane markings, sight distance, and oncoming traffic make the maneuver clearly safe.

Related: Solid yellow line, Blind spot
Speed limit

The maximum lawful speed for a road, set by posted signs or by default rules, and always subject to reduction for weather, visibility, or road conditions.

Related: Safe speed, Following distance
Safe speed

A speed appropriate to current conditions such as rain, darkness, traffic, or road surface, which may be well below the posted maximum limit.

Related: Speed limit, Following distance
Following distance

The gap between your vehicle and the one ahead, measured in seconds by counting as the vehicle passes a fixed point; larger gaps are needed in poor conditions.

Related: Two-second rule, Safe speed
Two-second rule

A method of keeping a safe gap by counting two seconds between the vehicle ahead passing a landmark and your own vehicle reaching it.

Related: Following distance, Safe speed
Blind spot

The area around a vehicle not visible in the mirrors; drivers must turn their head to check it before changing lanes or pulling out.

Related: Overtaking, Lane change
Lane change

Moving from one traffic lane to another after signaling, checking mirrors and blind spots, and confirming there is enough space to move safely.

Related: Blind spot, Broken white line
Blood alcohol concentration

The measured amount of alcohol in a person's blood, expressed as a percentage or grams per deciliter, used to decide whether driving is legally permitted.

Related: Driving under the influence, Impairment
Driving under the influence

Operating a vehicle while affected by alcohol, drugs, or other substances that reduce judgment, reaction time, or control, which is a serious offence.

Related: Blood alcohol concentration, Impairment
Impairment

Any reduction in a driver's ability to see, judge, react, or control the vehicle caused by alcohol, drugs, illness, fatigue, or strong emotions.

Related: Driving under the influence, Fatigue
Fatigue

Extreme tiredness that slows reactions and can cause a driver to fall asleep at the wheel; the safe response is to stop and rest, not to push on.

Related: Impairment, Distraction
Distraction

Any activity that takes a driver's eyes, hands, or attention away from the road, such as phone use, eating, or adjusting controls while moving.

Related: Fatigue, Hands-free device
Hands-free device

Equipment that lets a driver talk on a phone without holding it; it reduces manual distraction but still takes mental attention from driving.

Related: Distraction
Seat belt

A restraining strap that holds occupants in place during sudden stops or crashes; it must be worn correctly by the driver and all passengers where required.

Related: Child restraint, Head restraint
Child restraint

A specially designed seat or booster for young passengers that positions the seat belt correctly and protects them in a crash according to their size and age.

Related: Seat belt
Head restraint

The padded support at the top of a seat that limits backward head movement in a rear impact and helps prevent neck injury; it should be properly adjusted.

Related: Seat belt
Tyre tread depth

The thickness of rubber remaining on a tyre's surface; too little tread reduces grip, especially on wet roads, and tyres must be replaced when worn.

Related: Tyre pressure, Skidding
Tyre pressure

The amount of air inside a tyre, checked when cold against the vehicle manufacturer's recommended figure; incorrect pressure harms grip, wear, and fuel use.

Related: Tyre tread depth
Pedestrian

A person travelling on foot or using a wheelchair or similar aid; drivers must give way at crossings and take extra care near schools and markets.

Related: Crosswalk, Vulnerable road user
Vulnerable road user

A road user with little physical protection, such as a pedestrian, cyclist, motorcyclist, or child, who needs extra space and lower speeds from drivers.

Related: Pedestrian, Cyclist, Motorcycle
Cyclist

A person riding a bicycle; drivers should pass with generous clearance, check for them before turning, and watch for them at junctions and in blind spots.

Related: Vulnerable road user, Blind spot
Motorcycle

A two-wheeled motor vehicle that is harder to see than a car; drivers must check mirrors and blind spots carefully and allow a full lane when passing.

Related: Vulnerable road user, Blind spot
Heavy vehicle

A large truck, bus, or other commercial vehicle with long stopping distances and wide blind spots; other drivers should avoid cutting in front of them.

Related: Blind spot, Following distance
Skidding

Loss of tyre grip on a slippery surface, causing the vehicle to slide; the response is to ease off the accelerator and steer smoothly without harsh braking.

Related: Tyre tread depth, Safe speed
Collision report

A written record of a crash giving time, place, parties, vehicles, injuries, and damage, often required by police or insurers after an incident.

Related: Third-party insurance, Roadside emergency
Roadside emergency

A breakdown or crash situation where the driver should move off the road if possible, switch on hazard lights, and place a warning triangle behind the vehicle.

Related: Hazard lights, Collision report
Hazard lights

Flashing indicator lights on all four corners used to warn other road users of a stopped, slow, or broken-down vehicle in an emergency.

Related: Roadside emergency
Third-party insurance

Cover that pays for injury or damage the insured driver causes to other people or their property, and which is normally required before a vehicle may be used on public roads.

Related: Vehicle registration, Collision report
Vehicle registration

The official record linking a vehicle and its plate number to an owner; the certificate and plate must be valid and kept up to date while driving.

Related: Third-party insurance, Driving licence
Driving licence

A document issued by the authorities permitting a person to drive specified classes of vehicle, which must be carried or produced when lawfully requested.

Related: Vehicle registration, Learner permit
Learner permit

A provisional authorisation allowing a person to practise driving under stated conditions, such as supervision by a licensed driver and display of learner signs.

Related: Driving licence