Najran General Dept. of Traffic Truck & Bus
Timed mock exam· Full mock examsNajran General Dept. of Traffic - Saudi Truck & Bus Theory Mock Test 2
Second full heavy-vehicle mock exam with a fresh 35-question selection across road rules, signs and truck and bus topics. Keep practising without repetition.
What is the maximum speed permitted where this sign is displayed?
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.
- Q11Right of way
You are in the closing lane of a two-to-one merge caused by a lane drop. The lane next to you is the continuing lane. What is the correct zip-merge behaviour?
- AImmediately move to the continuing lane as soon as you see the signs
- BStop in your lane and wait for the continuing lane to clear completely
- CContinue to the merge point and then alternate with traffic in the continuing lane
- DAccelerate past as many vehicles as possible before the merge point
Answer and explanation in the bank
- Q12Safe driving
What is the danger of driving with a heavily loaded roof rack that raises the vehicle's centre of gravity?
- AIt increases the risk of rollover, especially during sudden lane changes or when cornering at speed
- BIt reduces fuel consumption
- CIt only affects braking on gravel roads
- DIt improves traction in sand
Answer and explanation in the bank
- Q13Penalties and fines
A driver accumulates enough violation points in Saudi Arabia to trigger a licence suspension. During the suspension period, what happens if they continue to drive?
- ADriving while suspended is a serious additional offence that can lead to arrest, heavy fines and an extended or permanent licence ban
- BThe suspension is only advisory; the driver can appeal and continue driving normally
- CNo additional penalty applies; the original suspension is the only consequence
- DThe driver is permitted to drive to work only during a licence suspension
Answer and explanation in the bank
- Q14Heavy vehicle
What document must a driver of a dangerous-goods vehicle carry at all times during transport?
- AOnly the vehicle registration and driving licence are required, the same as for any other truck
- BA letter from the loading company confirming that the cargo has been checked
- CA certificate of insurance covering the dangerous goods
- DA transport document listing the UN number, proper shipping name, hazard class, packing group, and emergency response information for each dangerous good carried
Answer and explanation in the bank
- Q15Road signs and signals
What should you do when you see a warning sign indicating animals on the road ahead?
- ASound your horn continuously to frighten the animals away
- BReduce speed and be prepared to stop - animals may appear suddenly
- CSwitch on your hazard lights and accelerate past quickly
- DContinue at normal speed as animals usually move off the road
Answer and explanation in the bank
- Q16Traffic rules
You are involved in a minor road traffic collision with no injuries in Saudi Arabia. What must you do?
- ALeave the scene immediately to avoid causing more congestion
- BArgue with the other driver and decide who was at fault privately, then drive away
- COnly report the collision if the damage exceeds a certain cost, which you estimate yourself
- DMove vehicles off the road if safe to do so, exchange details, and report to traffic police or use the official app as required
Answer and explanation in the bank
- Q17Right of way
You are leaving a private road and joining a public road. There is no GIVE WAY or STOP sign. Who has priority?
- AYou have priority because you are joining the road
- BTraffic already on the public road has priority
- CRight-hand priority applies so give way to traffic from your right only
- DBoth vehicles must stop and negotiate
Answer and explanation in the bank
- Q18Safe driving
You suspect the driver in front has been driving erratically. What is the safest defensive action?
- AOvertake them quickly to get away from the risk
- BIncrease your following distance significantly, avoid overtaking unless clearly safe, and if necessary pull over and report to police
- CFlash your lights to warn them to drive better
- DFollow at exactly 2 seconds to monitor them closely
Answer and explanation in the bank
- Q19Penalties and fines
A driver changes lanes without using an indicator on a Saudi motorway and nearly causes a collision. Which offence applies?
- AFailing to signal when changing lanes, and depending on the circumstances, also potentially dangerous driving
- BNo offence, as indicators are advisory on motorways
- COnly an offence at night when visibility is reduced
- DOnly an offence if physical contact is made with another vehicle
Answer and explanation in the bank
- Q20Heavy vehicle
A truck carrying flammable liquids is involved in an accident and the tank begins to leak. What is the driver's immediate priority?
- AMove away from the vehicle, warn other road users, call the emergency services, provide the transport document to rescuers, and prevent ignition sources from approaching
- BAttempt to repair the leak using tools from the cab to prevent spillage
- CDrive the vehicle to the nearest fire station at reduced speed
- DCover the leak with a tarpaulin and wait for the operator to send a recovery vehicle
Answer and explanation in the bank
- Q21Road signs and signals
Why are warning signs placed some distance before the hazard they show?
- ATo mark the exact point where the hazard begins
- BTo show that parking is allowed until the hazard
- CThey are placed after the hazard to confirm you have passed it
- DTo give you time to slow down and prepare before you reach the hazard
Answer and explanation in the bank
- Q22Traffic rules
A driver in front of you brakes heavily. You maintain a safe following distance and stop without colliding. The driver behind you, however, rear-ends you. Who is generally considered at fault for the rear collision?
- AThe driver who struck you from behind, for failing to maintain a safe following distance
- BYou, because you were stationary on the road
- CThe driver ahead who braked, because they caused the chain reaction
- DFault is shared equally among all three drivers
Answer and explanation in the bank
- Q23Right of way
At a Y-junction a GIVE WAY line is marked across the branch you are on. The other branch has no marking. What does this mean?
- AYou must give way to traffic on the other branch
- BYou and the other branch share equal priority
- CThe GIVE WAY line applies to both branches equally
- DYou only give way if a vehicle is already in the junction
Answer and explanation in the bank
- Q24Safe driving
Why is it especially important to check for motorcycles in your blind spot before changing lanes?
- AMotorcycles are narrow and can easily be hidden in a blind spot that a larger vehicle would not fit in
- BMotorcycles always travel faster than cars
- CMotorcycle riders have the right of way in all situations
- DMotorcycles are not required to follow lane discipline
Answer and explanation in the bank
- Q25Penalties and fines
A Saudi-registered vehicle is found to have no number plate (licence plate) fitted at the front. Is this an offence?
- ANo, only the rear plate is legally required in Saudi Arabia
- BYes, both front and rear plates must be properly fitted and clearly legible; missing or obscured plates are a fineable offence
- COnly an offence if the vehicle is also unregistered
- DPermitted as long as the plate is displayed inside the windscreen
Answer and explanation in the bank
- Q26Heavy vehicle
Which dangerous goods class covers compressed gases such as LPG and oxygen cylinders carried on a heavy truck?
- AClass 2, which covers compressed, liquefied, or dissolved gases including flammable, non-flammable, and toxic gases
- BClass 3, which covers flammable liquids
- CClass 5, which covers oxidising substances and organic peroxides
- DClass 8, which covers corrosive substances
Answer and explanation in the bank
- Q27Road signs and signals
Running a red traffic light in Saudi Arabia is classified under which offence category?
- AA minor infringement with a written warning only
- BA civil matter handled only if an accident occurs
- CA serious violation: a SR 3,000-6,000 fine and 12 points
- DA SR 150-300 fine with no points
Answer and explanation in the bank
- Q28Traffic rules
What does a flashing amber (yellow) traffic signal mean?
- AStop immediately and do not cross the line
- BThe signal is about to turn green; accelerate
- CProceed with caution; treat the junction as give-way
- DEmergency vehicles are approaching; pull over
Answer and explanation in the bank
- Q29Right of way
You are on a motorway and need to take the next exit. You are in lane 3, the leftmost (fast) lane. When should you start moving towards the exit?
- ABegin moving right well in advance, lane by lane, giving way to traffic in each lane
- BSignal and move right all at once when you see the exit sign
- CContinue in lane 3 until the last moment, then cut across all lanes
- DOnly vehicles in lane 1 (the rightmost lane) may use exits; move when safe
Answer and explanation in the bank
- Q30Safe driving
What is the first sign that your engine is overheating on a desert highway?
- AThe engine warning light flashes yellow
- BThe fuel gauge drops suddenly
- CThe air conditioning stops working
- DThe temperature gauge moves into the red zone or a high-temperature warning light illuminates
Answer and explanation in the bank
- Q31Penalties and fines
Is it an offence in Saudi Arabia for a driver to eat, drink or perform other distracting activities while driving?
- ANo, only mobile phone use is regulated; other activities are the driver's personal choice
- BYes, any activity that diverts attention from driving and reduces the ability to control the vehicle safely can be treated as a distracted driving offence
- COnly prohibited at speeds above 100 km/h
- DPermitted as long as the vehicle is travelling in a straight line
Answer and explanation in the bank
- Q32Heavy vehicle
What is the purpose of the range-change (hi/lo) splitter on a heavy truck gearbox?
- AIt selects four-wheel drive for off-road driving conditions
- BIt controls the differential lock on the rear axle
- CIt changes the fuel map between economy and power modes
- DIt doubles the number of available gear ratios by providing a high and low range for each main gearbox position, giving the driver finer control of engine speed and tractive effort
Answer and explanation in the bank
- Q33Road signs and signals
What does an amber (yellow) traffic signal mean in Saudi Arabia?
- APrepare to stop - the light is about to turn red
- BProceed quickly to clear the junction before the red
- CTraffic may continue at the same speed
- DOnly buses and taxis may proceed
Answer and explanation in the bank
- Q34Traffic rules
You are approaching a junction and the traffic light turns amber. What should you do?
- AAccelerate to clear the junction before the light turns red
- BStop if you can do so safely; only continue if stopping would be dangerous
- CContinue at the same speed as it is only a warning
- DAmber means go for motorcycles but stop for cars
Answer and explanation in the bank
- Q35Right of way
You are at a pelican crossing and the amber light is flashing. A pedestrian has just stepped onto the crossing. What must you do?
- AContinue because the amber phase means pedestrians should wait
- BGive way to the pedestrian already on the crossing
- CSound your horn to warn the pedestrian to hurry
- DStop and wait for the green light before proceeding
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 Najran General Dept. of Traffic truck & bus theory test?
The official General Dept. of Traffic truck & bus theory test in Najran 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 Najran 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.