Al Jouf General Dept. of Traffic Truck & Bus
Timed mock exam· Full mock examsAl Jouf General Dept. of Traffic - Saudi Truck & Bus Theory Mock Test 1
A full 35-question timed practice exam for the Saudi heavy-vehicle (truck and bus) theory test. Covers shared road rules and signs plus heavy-vehicle handling and safety. Aim for 22/35 to pass.
Why should a driver use the engine brake or exhaust brake on a long downhill gradient rather than relying on the service (foot) brakes alone?
The other 25 questions in this test
Read them all. The answer and the reason for each, and the timed 35-question run, are in the Saudi Driving Theory Online Practice Bank.
- Q11Traffic rules
You are driving at night on an unlit rural road. Another vehicle approaches from ahead with full high-beam. You are temporarily blinded. What should you do?
- AFlash your own high-beam repeatedly and maintain speed
- BClose your eyes briefly until the glare passes
- CSwerve to the left to avoid the other vehicle
- DSlow down, look toward the left edge of the road to guide yourself, and do not stop suddenly in the lane
Answer and explanation in the bank
- Q12Right of way
You meet an oncoming lorry on a narrow road with a steep drop on your side. The lorry is partially on your side. What should you do?
- ASound your horn and hold your position; the lorry must move back
- BAccelerate past the lorry before it can move further into your lane
- CSlow down, stay as far to the right as safely possible, and communicate calmly to find a solution
- DReverse at speed to the nearest junction
Answer and explanation in the bank
- Q13Safe driving
What is the safest position for your hands on the steering wheel for maximum control?
- A12 o'clock position with both hands together at the top
- BOne hand at 6 o'clock for relaxed long-distance driving
- C10 and 2 o'clock position at all times in all vehicles
- D9 and 3 o'clock position (or 8 and 4 for vehicles with large airbags)
Answer and explanation in the bank
- Q14Penalties and fines
A driver discovers a traffic fine in Absher that they were unaware of from two years ago. Can this old fine still be enforced?
- ANo, fines automatically expire after 12 months if unpaid
- BOnly fines from the past 90 days can be enforced; older ones are written off
- CYes, traffic fines in Saudi Arabia do not automatically expire and remain enforceable until paid, blocking Istimara renewal
- DOld fines are waived automatically during the annual royal pardon period
Answer and explanation in the bank
- Q15Heavy vehicle
What is the kingpin on an articulated trailer?
- AThe central locking pin that holds the trailer's cargo doors shut during transit
- BA safety pin that prevents the landing legs from accidentally folding while the trailer is coupled
- CThe pin that connects the service brake air line to the trailer brake system
- DA steel pin on the underside of the trailer's front skid plate that locks into the fifth wheel of the tractor unit to form the articulation joint
Answer and explanation in the bank
- Q16Traffic rules
When driving in convoy through the Saudi desert, what special precaution should you take regarding following distance?
- AIncrease the following distance beyond the normal road rule to account for dust that obscures visibility and loose sand that extends stopping distances
- BDecrease the distance so you do not lose sight of the vehicle ahead in dust
- CDesert convoys have no special following distance rules
- DFollow as closely as possible to use the lead vehicle's tyre tracks as a guide
Answer and explanation in the bank
- Q17Right of way
A cyclist approaches a roundabout and continues to ride around it rather than dismounting. Who has priority between the cyclist inside the roundabout and a car trying to enter?
- AThe car entering the roundabout has priority because it is heavier
- BThe cyclist already in the roundabout has priority as circulating traffic
- CBoth have equal priority and must negotiate
- DThe car has priority because cyclists should dismount at roundabouts
Answer and explanation in the bank
- Q18Safe driving
What does a Tyre Pressure Monitoring System (TPMS) warning light in your dashboard mean?
- AYour tyres are over-inflated and you should release air immediately
- BOne or more tyres have dropped significantly below the recommended pressure and you should check and inflate them
- CThe spare tyre has been removed
- DThe tyre tread has reached the wear indicator
Answer and explanation in the bank
- Q19Penalties and fines
A driver is caught transporting a passenger in a pick-up truck's open cargo bed without proper seating or restraints. What is the likely penalty?
- AA traffic fine for illegally carrying passengers in an unsafe manner, because passengers must be carried in properly equipped seating areas
- BNo offence; riding in a pick-up truck bed is a traditional practice that is legally permitted
- COnly an offence if the truck is travelling at more than 60 km/h
- DPermitted outside city limits on rural roads
Answer and explanation in the bank
- Q20Heavy vehicle
A driver notices that the kingpin has visible wear and cracks after coupling. What action must be taken?
- ADrive only at low speed to the nearest workshop, because the kingpin is unlikely to fail completely on a short journey
- BLubricate the kingpin with grease and tighten the fifth wheel jaw to compensate for the wear
- CDo not move the vehicle; the trailer must be taken out of service for inspection and repair of the kingpin before it is used
- DComplete the current delivery and report the condition at the next scheduled maintenance
Answer and explanation in the bank
- Q21Traffic rules
What must you do when an emergency vehicle (ambulance, police, or fire) approaches from behind with lights and siren active?
- AMove to the right and slow down or stop to allow the emergency vehicle to pass
- BSpeed up to stay ahead of the emergency vehicle
- CStay in your lane and maintain speed so traffic flow is not disrupted
- DMove to the left lane immediately
Answer and explanation in the bank
- Q22Right of way
You are approaching speed humps in a school zone. A child is on the pavement near the humps. What should you do?
- AMaintain your speed and cross the humps normally
- BSlow down significantly for the humps and be prepared to stop if the child steps onto the road
- CSound your horn to warn the child and proceed
- DSpeed up to pass quickly before the child can react
Answer and explanation in the bank
- Q23Safe driving
You are the first person to arrive at a collision where a vehicle has caught fire and a person is trapped inside. What is the priority order?
- APhotograph the scene first, then call emergency services, then attempt rescue
- BCall emergency services immediately (911), warn other traffic, and only attempt to free the trapped person if there is no immediate fire danger and you can do so safely
- CAttempt to free the trapped person at all costs before doing anything else
- DWait for other motorists to help before taking any action
Answer and explanation in the bank
- Q24Penalties and fines
A driver allows an unlicensed person to drive their vehicle in Saudi Arabia. Who is held responsible?
- ABoth the vehicle owner and the unlicensed driver can face penalties; the owner for permitting an unlicensed person to drive
- BOnly the unlicensed driver is penalised; the owner bears no responsibility
- CNeither is penalised unless an accident occurs
- DOnly the owner is penalised; the unlicensed driver cannot be charged as they hold no licence
Answer and explanation in the bank
- Q25Heavy vehicle
Why are high-sided curtain-sided trailers especially vulnerable on exposed sections of Saudi highways during windy conditions?
- AWind vibrates the curtain fabric and loosens the load restraints
- BWind reduces the air pressure in the tyres, lowering traction
- CHigh-sided vehicles are not vulnerable to wind because their aerodynamic shape deflects air over the roof
- DThe large flat surface of the trailer acts as a sail, and strong crosswinds can generate enough lateral force to push the trailer sideways or cause rollover, especially when lightly loaded
Answer and explanation in the bank
- Q26Traffic rules
What does a double continuous yellow centre line on a Saudi road indicate?
- ANeither direction of traffic may cross or overtake across the line
- BOnly the vehicle on the left may overtake
- CThe road is a two-way road with priority to the right
- DThe line marks the edge of a bus lane
Answer and explanation in the bank
- Q27Right of way
A military convoy is moving with police escort vehicles fore and aft with flashing lights. You want to turn right across its path at a junction. What must you do?
- AWait until the entire convoy and its escort vehicles have passed before turning
- BInsert yourself into the convoy gap and turn when clear
- CTurn as soon as the lead escort clears the junction
- DFlash your lights and the convoy must give way to you
Answer and explanation in the bank
- Q28Safe driving
What is the main safety function of the headrest (head restraint) in your seat?
- ATo make long drives more comfortable
- BTo limit rearward head movement and reduce whiplash injury in a rear-end collision
- CTo prevent the driver from falling asleep
- DTo support the neck when checking blind spots
Answer and explanation in the bank
- Q29Penalties and fines
A commercial truck driver in Saudi Arabia is caught driving while using a mobile phone. Are the penalties the same as for a private car driver?
- ACommercial drivers are exempt if the call is work-related
- BThe same handheld-device violation applies to every driver: SR 500-900 and 2 points
- CTrucks can only be fined by a police officer, not by Saher cameras
- DTruck drivers only receive a warning for the first offence
Answer and explanation in the bank
- Q30Heavy vehicle
A driver is crossing an exposed bridge in a high-sided empty trailer when a sudden strong gust hits from the side. What is the correct immediate response?
- AReduce speed smoothly, grip the steering wheel firmly with both hands, steer gently to counteract the push, and do not make sudden swerving corrections
- BAccelerate to pass the exposed section of bridge as quickly as possible
- CApply the trailer brakes sharply to stabilise the trailer
- DSteer sharply into the wind to prevent the trailer from blowing off course
Answer and explanation in the bank
- Q31Traffic rules
You are driving through an underpass (tunnel) and your vehicle breaks down. What must you NOT do?
- ASwitch on hazard lights and attempt to reach the nearest emergency exit
- BCall emergency services immediately
- CLeave the vehicle stopped in a live traffic lane without warning devices
- DWarn following drivers by turning on all available lights
Answer and explanation in the bank
- Q32Right of way
You are approaching an unmarked crossroads at speed. What is the safest approach even before applying right-hand priority?
- AMaintain your speed; you have priority if no one is to your right
- BSound your horn to warn cross-traffic and proceed
- CPriority rules mean you never need to reduce speed at such junctions
- DReduce speed so that you can stop safely if another vehicle appears, then apply right-hand priority
Answer and explanation in the bank
- Q33Safe driving
Before a long desert highway journey, which pre-trip check is most important to minimise breakdown risk?
- ACleaning the windscreen and adjusting the radio presets
- BOnly the fuel level; modern vehicles rarely break down
- CChecking tyre condition and pressure, engine oil level, coolant level, brakes, and fuel with a spare for remote sections
- DThe air conditioning refrigerant level only
Answer and explanation in the bank
- Q34Penalties and fines
A driver in Saudi Arabia has their licence suspended due to accumulated violations. How can the licence typically be reinstated?
- ALicences reinstate automatically after 90 days with no action required from the driver
- BBy obtaining a letter from the employer confirming the driver needs the licence for work
- CBy applying to the courts for an emergency driving permit
- DBy paying all outstanding fines, completing any required suspension period and in some cases passing a re-examination or a traffic safety course, as directed by Moroor
Answer and explanation in the bank
- Q35Heavy vehicle
How does extreme heat in Saudi Arabia affect truck tyre pressure during a long journey?
- AHeat causes tyres to deflate gradually, so pressure should be topped up at every fuel stop
- BTyre pressure is unaffected by temperature changes in a tubeless tyre
- CHot weather tyres should be inflated 50% above the cold specification to prevent overheating
- DTyre pressure rises significantly as the air inside heats up; tyres must be checked cold before departure, and pressure must never be released from hot tyres to bring the reading down
Answer and explanation in the bank
Every answer above, with the rule it comes from, plus the full 35-question timed test.
Get the Saudi Driving Theory Online Practice Bank - SAR 39What this test covers
Topics include road signs, traffic signals, right of way, roundabouts, speed limits, seat belts, fines and penalties, and the safe-driving rules specific to your vehicle category. Full question-by-question feedback with explanations is shown immediately after you finish the test above.
Frequently asked questions
How many questions is the Al Jouf General Dept. of Traffic truck & bus theory test?
The official General Dept. of Traffic truck & bus theory test in Al Jouf has 35 questions and you need 22 correct (63%) to pass. This practice test has 35 questions.
Is this the real exam?
These are practice questions to help you revise, written to the published rules and to what candidates report from the real test. They are not the official Saudi exam and the real question bank, format, fees and pass mark are set by the General Department of Traffic (Moroor) and the driving schools, and can change. Always confirm the current requirements with your driving school or the traffic department.
Is this practice test free?
The first 10 questions are free, with no signup, and each shows the answer and the reason. The full 35-question test, timed, is in the Saudi Driving Theory Online Practice Bank (SAR 39, one payment), with every question in the bank.
What does the Al Jouf truck & bus theory test cover?
Road signs, traffic signals, right of way, roundabouts, speed limits, seat belts, penalties and safe-driving rules, plus the handling and safety topics specific to your vehicle.