Bahrain Heavy Vehicle Theory flashcards

32 cards. Read the term and the definition here. The deck at the top of this page is optional.

Default urban speed limit

In Bahrain the default speed limit in built-up areas is 50 km/h unless a posted sign shows a different figure.

Overtaking rule

Overtaking is normally performed on the left. You may pass on the right only when the vehicle ahead is signalling a right turn.

Solid white centre line

A continuous white line down the centre of the road means you must not cross it or overtake. A broken line permits crossing when safe.

Warning sign shape

Triangular signs with red borders warn of hazards ahead, such as bends, junctions or pedestrian crossings.

Two-second rule

Maintain at least two seconds' gap behind the vehicle ahead in good conditions. Double it to four seconds in rain, dust or darkness.

Stopping distance formula

Total stopping distance equals thinking distance plus braking distance. Both increase with speed, and braking distance rises sharply with vehicle weight.

Minimum tyre tread depth

Heavy vehicle tyres must have at least 1 mm of tread across three-quarters of the width and around the whole circumference.

Defect reporting duty

Any safety-related defect must be reported to the operator before the vehicle is used again and recorded in the defect log.

Daily driving limit

Heavy vehicle drivers must not exceed 9 hours of daily driving, extendable to 10 hours no more than twice per week.

Daily rest requirement

A daily rest of at least 11 hours must be taken within each 24-hour period before the next duty begins.

Load centre of gravity

Keep heavy items low and centred over the drive axles. A high centre of gravity increases rollover risk on curves.

Overhang marking

Loads projecting beyond the rear must be marked with a red flag by day and a red light at night at the extremity.

Air brake pressure range

Heavy vehicle air brake systems normally operate at about 8 to 10 bar, with a low-pressure warning below roughly 4.5 bar.

Brake fade remedy

When brakes overheat on a long descent, select a lower gear and use engine braking. Do not pump the pedal or ride the brakes.

Fifth-wheel tug test

After coupling, drive gently against the trailer parking brake to confirm the kingpin is locked, then check the release handle is secured.

Trailer reversing rule

To reverse a trailer, steer the opposite way to the direction you want the trailer to go, using both mirrors continuously.

Recovery position

An unconscious but breathing casualty should be placed on their side with the head tilted back to keep the airway open.

CPR compression rate

If a casualty is not breathing, give chest compressions at 100 to 120 per minute and continue until emergency help arrives.

Alcohol limit for drivers

For professional heavy vehicle drivers in Bahrain, any alcohol in the blood is an offence; the effective legal limit is zero.

Medication and driving

Many prescription and over-the-counter medicines cause drowsiness. Check the label and ask a pharmacist before driving.

Fuel-saving acceleration

Accelerate smoothly and change up early. Harsh acceleration and late braking waste fuel and increase emissions significantly.

Idling waste

Idling the engine while stationary burns fuel for no benefit. Switch off when stopped for more than a short period.

Heavy vehicle licence class

You must hold the licence class that matches the vehicle's gross weight and configuration before driving it on public roads.

Mandatory insurance

Third-party liability insurance is compulsory. Driving a heavy vehicle without valid insurance is a serious offence.

Roundabout priority

Traffic already circulating on a roundabout has priority. Enter only when there is a safe gap in the flow.

Yellow kerb markings

Double yellow lines along the kerb prohibit stopping at any time. Single yellow lines restrict parking during specified hours.

Dust storm driving

In dust storms reduce speed, increase following distance, switch on dipped headlights and avoid full beam, which reflects off dust.

Cold tyre pressure check

Check tyre pressures when tyres are cold and adjust for the load. Under-inflation causes heat build-up and increases blowout risk.

Tachograph manual entries

Any work, availability or rest not recorded automatically by the digital tachograph must be entered manually by the driver.

Axle load limits

Neither the gross vehicle weight nor any individual axle load may exceed the plated maximum for that vehicle.

Spring brake operation

Spring brakes apply automatically when air pressure is lost. The parking brake is held on by springs and released by air pressure.

Warning triangle placement

Place a warning triangle at least 50 metres behind the vehicle on a fast road, and further back on a motorway.