Jordan Driving Theory Heavy flashcards
Jordan Driving Theory Heavy · Build recall with a focused review session.
32 cards. Read the term and the definition here. The deck at the top of this page is optional.
- Right-hand traffic rule
- Jordan drives on the right. Overtaking is performed on the left, except when the vehicle ahead is signalling a left turn or traffic is queued.
- Blood alcohol limit
- The legal blood alcohol limit in Jordan is 0.00% for all drivers. Any detectable alcohol is a violation under the Traffic Law.
- Solid white centre line
- A solid white centre line prohibits crossing or overtaking. A broken white line permits crossing when safe and the road ahead is clear.
- Weight-limit sign
- A sign showing a lorry in a red circle bans goods vehicles above the indicated weight. Weight-limit signs state the maximum permissible gross vehicle weight in tonnes.
- Three-second rule
- Maintain at least a three-second following gap in dry conditions. Increase to six seconds in rain and nine or more on wet or icy surfaces.
- Stopping distance formula
- Total stopping distance equals thinking distance plus braking distance. Braking distance rises with the square of speed, so doubling speed quadruples braking distance.
- Retarder use on descents
- Engage the retarder or exhaust brake on long descents to supplement service brakes. Continuous service-brake use causes fade and loss of braking.
- Air pressure gauges
- Air-brake pressure gauges show both service and secondary circuits. A low-pressure warning buzzer or light requires stopping and investigation.
- Tyre tread minimum
- Tyre tread depth must be at least 1.6 mm across the central three-quarters of the tread. Check sidewalls for cuts, bulges, and embedded objects.
- Fifth wheel check
- Check the fifth wheel, coupling pin, and safety catch engagement on articulated units. Tug-test the trailer after coupling before moving off.
- Lashing capacity rule
- Lashing capacity must exceed the load's tendency to move. Use at least two independent securing devices where practicable and check security after the first 20–30 km.
- Centre of gravity
- Keep the centre of gravity as low and as close to the vehicle's centreline as possible. This preserves stability and reduces rollover risk.
- Gross vehicle weight
- Gross vehicle weight is the maximum permissible total weight of the vehicle plus load. Payload equals GVW minus the vehicle's kerb weight.
- Axle load rating
- Each axle has a rated maximum that must not be exceeded. A tandem or tri-axle group has a combined rating lower than the sum of individual axle ratings.
- Air-brake working pressure
- Air-brake systems operate at about 8–8.5 bar. The low-pressure warning should activate around 4.5 bar, before spring brakes apply automatically.
- Spring brake operation
- The parking brake is held by spring pressure and released by air. Loss of air pressure causes it to apply automatically, stopping the vehicle.
- Tyre blowout response
- If a tyre blows out, hold the steering firmly, ease off the accelerator, and avoid hard braking until control is regained.
- Skid recovery
- In a skid, steer in the direction of the skid and avoid sudden braking or sharp steering inputs until the vehicle regains grip.
- Daily rest requirement
- A daily rest period of at least 11 hours must be taken within each 24-hour period. Reduced rest of 9 hours is allowed a limited number of times.
- Tachograph record
- The tachograph must record driving, other work, availability, and rest. Falsification is a serious offence and records must be produced on request.
- DRABC primary survey
- The primary survey is DRABC: Danger, Response, Airway, Breathing, Circulation. Check and act in that order before treating injuries.
- CPR compression rate
- Begin CPR at 30 chest compressions to 2 rescue breaths for adults. Compress at 100–120 per minute to a depth of 5–6 cm.
- Extinguisher aim point
- Aim the extinguisher at the base of the fire and sweep side to side. Only tackle a small fire with an escape route behind you.
- Warning triangle distance
- Place warning triangles about 50 metres behind the vehicle on ordinary roads and further back on motorways or blind bends.
- Progressive gear changes
- Change gear at around 1,500–2,000 rpm in a heavy diesel. This reduces fuel consumption compared with revving to the red line.
- Tyre pressure and fuel
- Correct tyre pressure reduces rolling resistance. Under-inflated tyres increase fuel consumption and wear, and raise heat build-up risk.
- Licence categories C and D
- Heavy goods vehicles require Category C or C+E entitlement. Passenger-carrying heavy vehicles require Category D. The licence must match the vehicle class.
- Third-party liability insurance
- Third-party liability insurance is mandatory. Operating without valid insurance is an offence and voids claims. Undeclared commercial use may also void cover.
- Tachograph calibration
- A tachograph calibration certificate must be current and kept with the vehicle for enforcement checks, alongside licences, insurance, and inspection certificates.
- Reversing with a banksman
- When reversing, use a banksman or guide where visibility is restricted. If no guide is available, get out and check the area first.
- Overloading consequences
- Overloading increases braking distance, tyre heat, and road damage. It is an offence with fines and possible vehicle detention and prohibition notices.
- ABS emergency braking
- The anti-lock braking system prevents wheel lock-up. Keep firm pressure on the pedal during an emergency stop and do not pump it.