Northern Borders General Dept. of Traffic Truck & Bus
Timed mock exam· Full mock examsNorthern Borders 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.
Saudi Arabia uses the Saher system of automated speed cameras on roads across the Kingdom. What is the primary purpose of Saher?
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 want to turn left across oncoming traffic at a junction. The oncoming lane is busy. What must you do?
- AEdge forward slowly into the oncoming lane to signal your intention
- BSound your horn to request oncoming drivers to let you through
- CWait for a safe gap in oncoming traffic before turning
- DTurn immediately because left turns always have priority
Answer and explanation in the bank
- Q12Safe driving
You experience a sudden front tyre blowout at highway speed. What is the correct immediate response?
- ABrake hard and steer to the shoulder immediately
- BGrip the wheel firmly, keep straight, ease off the accelerator, and brake gently only after the car slows
- CPull the handbrake to slow quickly
- DTurn off the engine immediately
Answer and explanation in the bank
- Q13Penalties and fines
A Saher camera captures a speeding violation. How does the registered vehicle owner typically find out about the fine and pay it?
- AA traffic officer visits the owner's home address to deliver a paper notice
- BThrough the Absher digital government platform, which shows all outstanding traffic violations linked to the owner's ID
- CThe driver is stopped at the next police checkpoint automatically
- DNo notification is sent; fines only become apparent when renewing the vehicle registration (Istimara)
Answer and explanation in the bank
- Q14Heavy vehicle
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?
- ATo save fuel because using the engine brake charges the air compressor
- BTo prevent the service brakes from overheating and fading, which could lead to brake failure
- CBecause service brakes are not permitted on downhill gradients under Saudi regulations
- DTo keep the engine revs high enough for the alternator to charge the batteries
Answer and explanation in the bank
- Q15Road signs and signals
You see this warning sign mounted before an intersection. What does it mean?
- ANo U-turn is allowed in this area
- BA roundabout is ahead - prepare to give way to traffic already on it
- CTraffic must go around the central island to the left only
- DThe road turns back on itself
Answer and explanation in the bank
- Q16Traffic rules
How far in advance should you activate your indicator before turning at a junction?
- AJust as you start to turn the steering wheel
- BEarly enough for other road users to see it and react before you slow down or turn
- COnly if another vehicle is close behind you
- DIndicators are optional if you slow down first
Answer and explanation in the bank
- Q17Right of way
You are turning left at a junction where a dedicated right-turn filter lane exists for oncoming traffic. The filter light is green for oncoming drivers. What should you do?
- AProceed with your left turn because left turns never conflict with right-turn filters
- BWait and give way to oncoming vehicles using the green right-turn filter
- CFlash your lights to warn oncoming right-turning vehicles
- DTurn left at the same time as the filter vehicles to keep traffic flowing
Answer and explanation in the bank
- Q18Safe driving
What does ABS (Anti-lock Braking System) allow a driver to do during emergency braking?
- AStop in a shorter distance than normal braking on all surfaces
- BBrake without pressing the pedal
- CBrake only with the rear wheels
- DSteer around a hazard while braking hard
Answer and explanation in the bank
- Q19Penalties and fines
What happens to a driver who runs a red traffic light in Saudi Arabia?
- AA SR 3,000-6,000 fine and 12 points; Saher cameras also record it
- BNothing, unless an accident results from the action
- CA verbal caution is issued for the first offence only
- DThe vehicle is impounded immediately for at least one week
Answer and explanation in the bank
- Q20Heavy vehicle
Before descending a long steep grade, a heavy truck driver should select an appropriate gear. What is the correct principle?
- ASelect a low gear before reaching the descent so engine braking can hold the truck at a safe speed throughout
- BDescend in a high gear to keep engine revs low and reduce noise
- CDescend in neutral so the engine does not drag and overheat
- DBegin the descent in any gear and change down only if speed rises above the limit
Answer and explanation in the bank
- Q21Road signs and signals
What does this blue circular sign at a roundabout require of drivers?
- AYou may choose any direction on the roundabout
- BEmergency vehicles have priority here
- CThe roundabout is restricted to one lane only
- DTravel in the direction shown - anticlockwise around the roundabout
Answer and explanation in the bank
- Q22Traffic rules
When must you cancel your indicator after completing a lane change or turn?
- AImmediately after completing the manoeuvre
- BAfter 100 metres have passed
- CThe indicator cancels itself automatically, so no action is needed
- DOnly if another driver flashes their lights at you
Answer and explanation in the bank
- Q23Right of way
A filter lane on a dual carriageway is coming to an end and you need to merge with the main carriageway. Who must give way?
- ATraffic in the main carriageway must slow to let you merge
- BYou must give way and merge only when there is a safe gap in the main carriageway
- CBoth vehicles must slow down equally to allow the merge
- DWhichever vehicle is ahead at the merge point has priority
Answer and explanation in the bank
- Q24Safe driving
When your ABS activates you will feel the brake pedal pulsating or vibrating under your foot. What should you do?
- ARelease the brake pedal because the system has malfunctioned
- BKeep pressing firmly on the pedal and steer as needed
- CPump the brake pedal quickly to help the ABS
- DApply the handbrake simultaneously
Answer and explanation in the bank
- Q25Penalties and fines
A driver repeatedly tailgates other vehicles on a Saudi expressway. Which offence category does this fall under?
- ANo offence exists for following distance; only speed is regulated on expressways
- BThe offence only applies within city limits, not on expressways
- CFailing to maintain a safe following distance, which is a fineable traffic violation
- DTailgating is only penalised if the driver is also using a mobile phone at the same time
Answer and explanation in the bank
- Q26Heavy vehicle
How does an exhaust brake (Jake brake or compression release brake) slow a heavy truck?
- AIt partially blocks the exhaust pipe to create back-pressure that slows the driveshaft
- BIt uses engine compression to retard vehicle speed by opening exhaust valves at the top of the compression stroke, turning the engine into an air compressor
- CIt diverts exhaust gases back into the intake manifold to stall the engine gently
- DIt applies hydraulic pressure to all four wheel brakes through a separate circuit
Answer and explanation in the bank
- Q27Road signs and signals
What does this sign warn you about?
- APedestrians are not allowed to cross here
- BSchool children only may cross at this point
- CThe pavement ends and pedestrians must use the road
- DA pedestrian crossing is ahead - watch for people on the road
Answer and explanation in the bank
- Q28Traffic rules
When driving on a Saudi highway at night, when must you dip (switch from high-beam to low-beam) headlights?
- AOnly inside city limits
- BOnly when a police vehicle is present
- CHigh-beam must be used at all times outside cities
- DWhenever an oncoming vehicle is close enough that high-beam could dazzle its driver
Answer and explanation in the bank
- Q29Right of way
You are joining a motorway from a slip road. How should you merge with motorway traffic?
- AStop at the end of the slip road and wait for a clear gap
- BDrive to the end of the slip road and then signal right to force a gap
- CMotorway traffic must move left to allow your entry
- DMatch your speed to motorway traffic and merge when a safe gap appears
Answer and explanation in the bank
- Q30Safe driving
How often should you check your mirrors while driving on a Saudi highway?
- AOnly before overtaking
- BOnce every few minutes
- CEvery 5 to 8 seconds
- DOnly when changing lanes
Answer and explanation in the bank
- Q31Penalties and fines
A driver is stopped by traffic police and found to have no valid driving licence. What penalty applies?
- AOnly a verbal warning if the driver claims the licence was forgotten at home
- BA small administrative fee to obtain a temporary permit on the spot
- CA substantial fine, and the vehicle may be impounded until a licensed driver can take custody of it
- DThe driver is arrested and held for at least 48 hours automatically
Answer and explanation in the bank
- Q32Heavy vehicle
You are driving a fully laden semi-trailer on a long winding descent in the mountains near Taif. Your speed is gradually increasing even though you are in a low gear with the exhaust brake on. What is the safest immediate action?
- AShift to a higher gear to stop the engine over-revving
- BTurn the engine off to maximise engine-braking resistance
- CAccelerate briefly to match road speed, then re-engage a lower gear
- DApply the service brakes firmly and briefly in repeated short applications to control speed, and seek a runaway truck ramp or safe stopping point
Answer and explanation in the bank
- Q33Road signs and signals
Where would you most commonly see this warning sign in Saudi Arabia?
- ANear a school or playground
- BNear a hospital entrance
- COn an expressway on-ramp
- DAt a level crossing
Answer and explanation in the bank
- Q34Traffic rules
Under what weather conditions are front and rear fog lights permitted to be used in Saudi Arabia?
- AAny time of night for extra visibility
- BWhenever you are driving on an unlit road
- CFog lights can be used as a substitute for headlights at all times
- DOnly when visibility is seriously reduced by fog, dust, or heavy rain
Answer and explanation in the bank
- Q35Right of way
Two lanes of traffic merge into one due to roadworks. What is the correct zip-merge behaviour?
- ADrivers in the lane that is not closing must never allow anyone to merge
- BAll traffic should move into the open lane as early as possible
- CEach lane takes turns merging one by one at the merge point
- DThe driver with the longest journey has priority to merge first
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 Northern Borders General Dept. of Traffic truck & bus theory test?
The official General Dept. of Traffic truck & bus theory test in Northern Borders 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 Northern Borders 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.