Al Batinah North Royal Oman Police - Oman Heavy Vehicle Skills Test 2

Q: How many questions is the Al Batinah North Royal Oman Police truck & bus theory test?

The official Royal Oman Police truck & bus theory test in Al Batinah North has 30 questions and you need 23 correct (75%) to pass. This practice test has 22 questions.

Q: Is this the real exam?

These are original practice questions to help you revise. They are not the official Oman exam and the real question bank, format, fees and pass mark are set by the Royal Oman Police, and can change. Always confirm the current requirements with your driving school or the Royal Oman Police.

Q: Is this practice test free?

Yes. It is completely free, with no signup or payment, and you can retake it as many times as you like.

Q: What does the Al Batinah North 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.

Question 1

What is the minimum legal tread depth for heavy vehicle tyres in Oman (confirm the exact figure with the Royal Oman Police)?

Accepted Answer

Approximately 1 mm across the central three-quarters of the tread width, though drivers must confirm the exact current requirement with the Royal Oman Police. Tread depth determines a tyre's ability to channel water from the contact patch on wet roads. As tread wears, wet-road braking distance increases significantly. Oman's wet-season road conditions and occasional flood waters make adequate tread depth essential. Drivers should confirm the current legal minimum with the Royal Oman Police.

Answer

No legal minimum exists for truck tyres; drivers judge condition visually

Answer

5 mm is required for all vehicles including cars and trucks

Answer

Tread depth does not matter for truck tyres because they use rib-pattern tyres with no directional grooves

Question 2

What is the main reason that dual (twin) rear tyres on a truck drive axle must be checked for pressure on both inner and outer tyres?

Accepted Answer

An underinflated inner tyre is hidden from view and carries most of the load when the outer tyre is normal, causing it to fail without warning. On a dual tyre fitment the inner tyre is invisible from a normal walk-around inspection unless the driver specifically checks it with a gauge. If the inner tyre is flat or significantly underinflated, the outer tyre carries the full load of both. This causes rapid overheating of the outer tyre and can trigger a blowout without any visible warning.

Answer

Inner tyres always inflate to a higher pressure than outer tyres due to heat transfer

Answer

The tyre pressure monitoring system only monitors outer tyres, so inner tyres must be checked manually

Answer

Inner and outer tyres must be matched within 5 kg/cm squared of each other for ABS to function correctly

Question 3

A driver notices that their loaded truck's steering wheel has become unusually heavy when turning. What is the most likely cause?

Accepted Answer

A power steering fluid leak or pump failure, reducing or eliminating power assistance. Heavy steering on a truck that normally has power assistance indicates a failure of the power steering system, most commonly a leak in the hydraulic circuit or a pump failure. Operating a heavy loaded truck without power steering requires extreme physical effort and impairs the driver's ability to steer in an emergency. The driver should stop and arrange repairs.

Answer

The front axle is overloaded, compressing the front suspension and increasing steering resistance

Answer

Selecting a low gear on a straight road causes a mechanical feedback in the steering column

Answer

Cold ambient temperature thickening the steering fluid; it will improve once the vehicle warms up

Question 4

Why must a bus driver carry out a passenger count before departing from a terminal?

Accepted Answer

To ensure the number of passengers does not exceed the vehicle's licensed seating capacity and to comply with safety and insurance regulations. Overloading a bus is illegal and unsafe. Exceeding the licensed capacity increases the risk of accident through excess weight, reduces evacuation time in an emergency, and violates the vehicle's type approval. Bus operators in Oman must comply with capacity limits set on the vehicle's registration certificate.

Answer

To calculate the fuel needed for the journey based on total weight

Answer

To confirm all tickets have been scanned before departure

Answer

To report passenger numbers to the Royal Oman Police before every intercity journey

Question 5

What action must a bus driver take before opening doors at a bus stop in Oman?

Accepted Answer

Ensure the bus is fully stationary, check mirrors for cyclists or motorcyclists passing on the right, and only then open the doors. In Oman traffic flows on the right. The bus door(s) open toward the kerb on the right side. Before opening, the driver must check the right-side mirrors for motorcyclists, cyclists, or pedestrians passing along the right side of the bus. A passenger alighting into the path of a passing motorcyclist is a common fatal accident scenario.

Answer

Sound the horn to warn pedestrians that the doors are about to open

Answer

Open doors while still slowing to save time, as this is standard practice at busy stops

Answer

Flash the hazard lights twice to signal to traffic behind that doors are opening

Question 6

An empty high-sided curtainsider trailer is being driven back to the depot. Why can an unladen truck sometimes be more difficult to control than the same truck when loaded?

Accepted Answer

The lighter mass reduces tyre-road grip, reduces the effectiveness of the brakes in preventing wheel lock, and increases wind sensitivity; the suspension may also bounce more severely. When unladen, the drive axle has less weight over it, reducing traction and making the rear axle more prone to locking under braking. The lighter mass also means the large trailer side area has proportionally more influence when caught by cross-winds. Air suspension set for a loaded condition can bounce harshly when empty. Drivers must not assume the unladen return journey is easier or safer.

Answer

The empty trailer causes the fifth wheel to overheat, creating a steering wobble at speed

Answer

Without load weight, the transmission can select too high a gear automatically, causing the engine to lug

Answer

An empty truck has a lower centre of gravity, making it more prone to understeer in corners

Question 7

What does the term 'swept path' mean when a truck driver plans a tight manoeuvre?

Accepted Answer

The total area of road surface used by all wheels of the vehicle (including trailer) as it completes the manoeuvre, from the widest tracking of the cab to the tightest inside tracking of the rear wheels. Swept path planning is essential at narrow junctions, roundabouts, and loading bays. The swept path of a long articulated vehicle is much wider and more complex than a car's turning circle because the trailer tracks inside the cab's path (off-tracking) while the cab swings wide. Drivers must mentally calculate the full swept path to avoid striking kerbs, structures, or pedestrians.

Answer

The path taken by the cab front alone when turning, used to judge the minimum turning circle

Answer

The distance the vehicle travels from the start of braking to the point of stopping

Answer

The arc described by the trailer when reversing at a specific steering angle

Question 8

A truck driver on a long Oman highway journey notices that the outside temperature has risen to 45 degrees Celsius and the engine temperature gauge is approaching the red zone. What should the driver do?

Accepted Answer

Pull off the road safely, switch off the engine, and wait for the engine to cool before checking the coolant level; do not open the radiator cap while the engine is hot. An overheating engine in Oman's summer heat risks severe and expensive damage. The driver must pull over safely and turn off the engine. Attempting to open the radiator cap while the system is pressurised and hot will cause boiling coolant to eject, causing serious burns. After 30 minutes of cooling the driver can carefully check fluid levels. If the coolant level is fine, a mechanical fault such as a failed water pump or thermostat should be suspected.

Answer

Turn the heater on full blast to draw heat away from the engine and continue driving

Answer

Rev the engine higher to circulate coolant faster and reduce temperature

Answer

Open the bonnet while driving to allow air to cool the engine as quickly as possible

Question 9

A fully loaded truck requires a much longer stopping distance than a car at the same speed. What is the primary reason for this?

Accepted Answer

Greater mass means far more kinetic energy must be absorbed by the brakes. Greater mass dramatically increases kinetic energy (KE = 0.5 x m x v squared), so the brakes must absorb far more energy to stop the vehicle. This is why drivers must allow at least double the following distance of a car and begin braking much earlier, especially when loaded.

Answer

Truck tyres have less grip than car tyres

Answer

Air brakes respond more slowly than hydraulic brakes in all conditions

Answer

Trucks have fewer braking wheels than cars relative to their size

Question 10

On which side of a left-hand-drive truck driving in Oman is the largest blind spot located?

Accepted Answer

The right (passenger) side. In a left-hand-drive truck (standard in Oman where traffic drives on the right), the driver sits on the left. The right (passenger) side is furthest from the driver, creating the largest blind spot. Mirrors must be correctly adjusted, but a significant zone on the right near the trailer still cannot be seen.

Answer

The left (driver) side

Answer

Directly behind the trailer

Answer

Directly in front of the cab

Question 11

What is brake fade and when is it most likely to occur on a heavy vehicle?

Accepted Answer

A reduction in braking power caused by overheated brake drums or discs, most likely on long descents. Brake fade occurs when repeated or prolonged braking generates so much heat in the drums or discs that friction is reduced and stopping power drops sharply. It is most dangerous on long mountain descents such as the Jebel Akhdar road. Drivers must use engine or exhaust brakes to control speed and avoid riding the service brakes.

Answer

Air leaking from the brake chambers, most likely in cold weather

Answer

A gradual increase in brake pedal travel caused by worn brake shoes

Answer

The ABS cutting in repeatedly on a wet road

Question 12

When descending a steep mountain pass such as the Jebel Akhdar road in a loaded truck, what is the correct technique to control speed?

Accepted Answer

Select a low gear before the descent and use the engine or exhaust brake as the primary speed control, applying service brakes briefly and sparingly if needed. The correct technique is to engage a low gear before the descent begins and rely on engine or exhaust braking as the primary speed limiter. Service brakes should only be used in short, firm applications. Continuous brake application causes heat build-up and brake fade, which can result in total loss of stopping power on a steep mountain road.

Answer

Select a high gear to reduce engine braking and use the service brakes continuously to maintain a steady speed

Answer

Disengage the clutch and coast in neutral, braking gently to keep the speed constant

Answer

Select the highest gear available to keep engine speed low and reduce fuel consumption

Question 13

What is an exhaust brake (also called a Jake brake or engine retarder) used for on a heavy truck?

Accepted Answer

To slow the vehicle using engine compression resistance, reducing reliance on the service brakes during descents. An exhaust brake restricts exhaust gas flow to create back-pressure, turning the engine into a compression retarder. This slows the vehicle without using the service brakes, which is critical on long descents to prevent brake fade. It is especially important on mountain roads in Oman such as the Jebel Akhdar and Al Hajar passes.

Answer

To increase engine power when climbing steep hills with a heavy load

Answer

To lock the rear wheels for controlled emergency stops

Answer

To release the parking brake automatically when the driver selects a drive gear

Question 14

A truck's air brake system shows a low air pressure warning. What should the driver do?

Accepted Answer

Stop safely as soon as possible and not move the vehicle until the fault is found and repaired. Air brakes rely entirely on compressed air. If pressure drops below a safe threshold the spring-loaded parking brake automatically applies, but continuing to drive risks total brake failure before that happens. The driver must stop safely immediately and not move the vehicle until the system is repaired. Driving with low air pressure is extremely dangerous and illegal.

Answer

Continue driving slowly at low speed until the air compressor rebuilds pressure

Answer

Switch to the secondary hydraulic brake circuit and continue the journey

Answer

Apply the parking brake and drive on, as it will compensate for reduced air pressure

Question 15

What happens to a truck's air brakes if the air supply completely fails?

Accepted Answer

The spring-loaded parking brakes automatically apply, locking the vehicle. Air brake systems are fail-safe: spring-loaded (spring-applied) brakes are held off by air pressure. If air pressure is lost, the springs push the brakes on, locking the vehicle in place. This is a safety design, but it also means the driver loses the ability to release the brakes without restoring air pressure.

Answer

The brakes release fully, leaving the driver with no stopping ability

Answer

The ABS takes over and modulates hydraulic brake pressure

Answer

The retarder activates automatically to slow the vehicle

Question 16

How does cargo load affect the braking distance of a heavy truck?

Accepted Answer

A fully loaded truck has a significantly longer braking distance than the same truck unladen, because of the greater mass. Greater mass increases kinetic energy, so a loaded truck needs considerably more distance to stop than the same truck running empty. The braking system may not be proportionally more powerful, so drivers must adjust their speed and following distance according to the load being carried.

Answer

A fully loaded truck brakes shorter because the extra weight increases tyre grip

Answer

Load has no effect on braking distance as long as the brakes are correctly adjusted

Answer

An unladen truck always has the longest braking distance due to reduced tyre contact

Question 17

When securing a load on a flatbed truck, what is the key principle regarding load distribution?

Accepted Answer

The load should be spread to keep the centre of gravity as low and as central as possible, with weight distributed evenly across axles within legal limits. Correct load distribution keeps the centre of gravity low and central, reducing rollover risk and keeping axle loads within legal limits. Concentrating weight at the rear reduces steering control, while too much weight at the front can overload the steering axle. Individual axle limits must not be exceeded even if the gross weight is acceptable.

Answer

Heavy items should be placed at the rear of the trailer to improve traction on the drive axle

Answer

The load should be concentrated over the rear axle to maximise the payload rating

Answer

Load position does not matter as long as the total gross weight is within the legal limit

Question 18

A heavy truck is approaching a weight-restricted bridge. The posted limit is 10 tonnes. The truck has a gross vehicle weight of 18 tonnes. What must the driver do?

Accepted Answer

Find an alternative route that can accommodate the vehicle's weight. A weight restriction on a bridge applies to the total vehicle mass. At 18 tonnes gross the truck is almost double the 10-tonne limit and must not cross. Speed is irrelevant to structural load. The driver must plan the route in advance and use roads rated for the vehicle's actual weight.

Answer

Cross slowly and carefully at walking pace to reduce the impact

Answer

Cross if the road is clear of other traffic

Answer

Cross if the load is not exceeding the axle limit shown on the vehicle plate

Question 19

What is the maximum permitted vehicle height generally applied to trucks in Oman before a special permit is required (confirm the exact figure with the Royal Oman Police)?

Accepted Answer

4.2 metres, though drivers should confirm current limits with the Royal Oman Police. Oman generally applies a 4.2-metre height limit for standard vehicles, above which an oversize load permit is required. Drivers must check overhead clearances on gantries and bridges on their specific route. Always confirm the current legally enforced limit with the Royal Oman Police before an oversize move.

Answer

3.5 metres with no permit option available

Answer

5.0 metres with a standard load permit

Answer

4.8 metres for any flatbed truck regardless of load

Question 20

What is the maximum permitted vehicle width generally applied in Oman without a special permit (confirm the exact figure with the Royal Oman Police)?

Accepted Answer

2.5 metres, though drivers should confirm current limits with the Royal Oman Police. A width of 2.5 metres is the standard maximum for commercial vehicles in many GCC countries including Oman. Vehicles wider than this require an oversize permit and often an escort. Drivers should always confirm the current enforced limit with the Royal Oman Police, as regulations can be updated.

Answer

3.0 metres for all commercial vehicles

Answer

2.0 metres, the same as a standard car

Answer

Width limits do not exist in Oman; only length is regulated

Question 21

Why does a long articulated truck need to swing wide before turning right at an intersection in Oman?

Accepted Answer

The trailer wheels cut the corner and follow a tighter path than the cab, so the driver must position the cab wide to allow the trailer to clear the kerb. On a long articulated vehicle the rear trailer wheels track inside the path of the front wheels. If the driver turns without first swinging the cab wide, the trailer will cut across the corner and may mount the kerb, strike a pedestrian, or damage a structure. This off-tracking is proportional to the length of the trailer.

Answer

The steering is located on the right side of the cab, requiring extra space to operate

Answer

The length of the trailer increases the turning radius of the front wheels

Answer

Swinging wide reduces tail swing on the left side of the vehicle

Question 22

What is tail swing and when is it most dangerous for pedestrians?

Accepted Answer

The rear of the cab swings outward in the opposite direction to the turn; it is most dangerous during slow tight turns such as when entering or leaving a depot. When a truck turns, the rear of the cab or rigid body sweeps outward on the opposite side from the direction of turn. This tail swing can sweep a pedestrian standing nearby even though they appear to be clear of the vehicle. Drivers must check mirrors and ensure no-one is in the tail-swing zone before manoeuvring.

Answer

The trailer swings toward the outside of a bend at high speed; most dangerous on motorways

Answer

The drive axle shifts sideways during heavy braking; most dangerous on wet roads

Answer

The fifth wheel slides forward during cornering; most dangerous when unladen

Al Batinah North Royal Oman Police - Oman Heavy Vehicle Skills Test 2

Al Batinah North Royal Oman Police - Oman Heavy Vehicle Skills Test 2

What this test covers

Frequently asked questions