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Belgium CPC Code 95 study materials
Belgium CPC Code 95 study resources

Belgium CPC Code 95 practice questions

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Question 1Advanced training in rational driving based on safety regulations

Under Belgian road safety rules, what is the maximum permitted blood alcohol concentration for a professional driver of a heavy goods vehicle?

  1. 0.5 g per litre of blood
  2. 1.0 g per litre of blood
  3. 0.8 g per litre of blood
  4. 0.2 g per litre of blood Correct answer.

Explanation

Professional drivers of heavy goods vehicles are subject to a stricter limit of 0.2 g per litre of blood, which is far below the general limit for ordinary car drivers. This reflects the greater responsibility and potential consequences of driving a large vehicle. The general limit for other drivers is 0.5 g per litre.

Question 2Advanced training in rational driving based on safety regulations

When must a driver use the tachograph's manual entry function to record other work performed away from the vehicle?

  1. At the beginning or end of the working day, using the manual entry facility Correct answer.
  2. Whenever the vehicle is parked for more than one hour
  3. At the start of the following weekly rest period
  4. Only when requested by a police officer during a roadside check

Explanation

Periods of other work carried out away from the vehicle must be recorded manually, typically at the start or end of the working day. This keeps the record complete and compliant with driving and rest time rules. Failing to record such periods can lead to penalties during inspections.

Question 3Advanced training in rational driving based on safety regulations

What is the main purpose of a periodic technical inspection of a heavy goods vehicle?

  1. To confirm the driver's licence category is valid
  2. To increase the resale value of the vehicle
  3. To calculate the annual road tax payable
  4. To verify that the vehicle meets safety and environmental requirements Correct answer.

Explanation

Periodic technical inspection checks that a vehicle still complies with safety and environmental standards after it has been in service. It covers brakes, lights, emissions and structural condition among other items. Passing the inspection is a legal condition for continued use on public roads.

Question 4Advanced training in rational driving based on safety regulations

In normal dry conditions, what does the two-second rule help a driver to maintain?

  1. The minimum engine oil level
  2. The correct tyre pressure
  3. The legal speed limit on motorways
  4. A safe following distance behind the vehicle ahead Correct answer.

Explanation

The two-second rule gives a simple way to keep a safe gap behind the vehicle in front in good, dry conditions. The driver notes when the vehicle ahead passes a fixed point and should not reach that point for at least two seconds. The gap must be increased when conditions deteriorate.

Question 5Advanced training in rational driving based on safety regulations

Why should a driver avoid sudden braking on a wet road?

  1. It shortens the life of the windscreen wipers
  2. It increases fuel consumption noticeably
  3. It can cause the wheels to lock and the vehicle to skid Correct answer.
  4. It automatically switches on the hazard lights

Explanation

On a wet surface, grip is reduced, so hard braking can lock the wheels and lead to a loss of steering control or a skid. Smooth, progressive braking preserves traction and keeps the vehicle stable. Braking earlier and more gently compensates for the longer stopping distance.

Question 6Advanced training in rational driving based on safety regulations

What is the primary function of an anti-lock braking system (ABS) on a heavy goods vehicle?

  1. To reduce the total stopping distance in every situation
  2. To automatically apply the parking brake when stopped
  3. To increase the engine braking effect on descents
  4. To prevent the wheels from locking so that steering remains possible during heavy braking Correct answer.

Explanation

ABS modulates brake pressure to stop the wheels locking, which allows the driver to keep steering while braking hard. It does not guarantee a shorter stopping distance on all surfaces. Its main benefit is maintaining directional control during emergency braking.

Question 7Advanced training in rational driving based on safety regulations

What is the correct action when a driver feels fatigued during a long journey?

  1. Open a window and continue to the planned destination
  2. Increase speed to arrive sooner
  3. Turn on the radio at a higher volume and keep driving
  4. Stop at a safe place and take a rest break Correct answer.

Explanation

Fatigue seriously impairs reaction time and judgement, and the only effective remedy is to stop and rest. Opening a window or turning up the radio gives only brief, illusory relief. Continuing while tired greatly increases the risk of a collision.

Question 8Advanced training in rational driving based on safety regulations

What does a red triangle warning sign with a picture of a slippery road surface indicate?

  1. A permanent speed limit applies ahead
  2. A parking area is located ahead
  3. The road is closed to heavy goods vehicles
  4. The road ahead may be slippery, so speed should be reduced Correct answer.

Explanation

Triangular warning signs alert drivers to a hazard ahead, and the slippery road symbol indicates reduced grip. The appropriate response is to slow down and drive smoothly. Speed limits and prohibitions are shown by different sign shapes.

Question 9Advanced training in rational driving based on safety regulations

A driver is approaching a steep downhill section with a loaded vehicle. Which technique best maintains control?

  1. Switch off the engine to reduce speed
  2. Rely only on the footbrake throughout the descent
  3. Coast in neutral to save fuel
  4. Select a low gear before the descent and use engine braking to control speed Correct answer.

Explanation

Selecting a low gear before the descent uses engine braking to hold a steady speed and reduces reliance on the footbrake. Continuous heavy braking can overheat the brakes and cause fade. Coasting or switching off the engine removes control and is dangerous.

Question 10Advanced training in rational driving based on safety regulations

What is the minimum daily rest period for a driver subject to EU driving and rest time rules in a regular situation?

  1. 8 hours
  2. 14 hours
  3. 11 hours Correct answer.
  4. 9 hours

Explanation

In a regular situation the daily rest period must be at least 11 hours within each 24-hour period. This rest can be reduced to 9 hours no more than three times between two weekly rests. The rest must be taken as an uninterrupted block.

Question 11Advanced training in rational driving based on safety regulations

After how many hours of continuous driving must a driver take a break under the standard EU rules?

  1. After 6 hours
  2. After 8 hours
  3. After 2 hours
  4. After 4.5 hours Correct answer.

Explanation

A driver must take a break after a maximum of 4.5 hours of driving. The break must last at least 45 minutes unless it is split into two parts of at least 15 and 30 minutes. These limits protect against fatigue on long journeys.

Question 12Advanced training in rational driving based on safety regulations

A driver must reverse a large vehicle into a loading bay with poor visibility. What is the safest approach?

  1. Rely solely on the reversing camera without other checks
  2. Sound the horn continuously and reverse at normal speed
  3. Reverse quickly to minimise time in the hazard area
  4. Use a trained banksman or guide and reverse slowly Correct answer.

Explanation

Reversing with poor visibility is high risk, so a trained guide should direct the manoeuvre while the driver reverses slowly. The driver must still check mirrors and surroundings continuously. Cameras and sensors assist but cannot replace direct human guidance.

Question 13Advanced training in rational driving based on safety regulations

Why is it important to check the load distribution and secure the cargo before departure?

  1. To prevent load shift that could destabilise the vehicle or cause cargo to fall Correct answer.
  2. To reduce the vehicle's fuel tank capacity
  3. To increase the maximum permitted axle weight
  4. To shorten the required daily rest period

Explanation

Correct load distribution and securing prevent the load from shifting, which can destabilise the vehicle, especially in curves or during braking. Poorly secured cargo can also fall onto the road and endanger others. Load security is a legal and safety obligation.

Question 14Advanced training in rational driving based on safety regulations

What effect does a heavy load placed high on a vehicle have on its stability?

  1. It reduces the braking distance significantly
  2. It has no effect on stability if the vehicle is modern
  3. It lowers the centre of gravity and improves cornering
  4. It raises the centre of gravity and increases the risk of rollover Correct answer.

Explanation

A high centre of gravity makes a vehicle more likely to roll over, particularly when cornering or taking avoiding action. Loads should be placed as low as possible and distributed evenly. Stability is reduced even in modern vehicles if the load is badly positioned.

Question 15Advanced training in rational driving based on safety regulations

How should a driver adapt speed when driving in heavy rain with reduced visibility?

  1. Follow the vehicle ahead closely to use its lights as a guide
  2. Maintain the posted limit to avoid holding up traffic
  3. Reduce speed and increase the following distance Correct answer.
  4. Switch on rear fog lights in all rain conditions

Explanation

Heavy rain reduces both visibility and grip, so speed must be reduced and the gap to the vehicle ahead increased. This gives more time to react and shortens the risk of aquaplaning. Following closely reduces the available reaction distance.

Question 16Advanced training in rational driving based on safety regulations

What is the purpose of a pre-departure walk-around check of a heavy goods vehicle?

  1. To confirm the vehicle's fuel is at maximum level
  2. To record the driver's rest periods for the tachograph
  3. To detect visible defects such as tyre damage, leaks or faulty lights before driving Correct answer.
  4. To calculate the route's toll costs

Explanation

A walk-around check allows the driver to spot obvious defects such as damaged tyres, fluid leaks or broken lights before setting off. Detecting defects early prevents breakdowns and accidents. It is a routine part of a professional driver's duties.

Question 17Advanced training in rational driving based on safety regulations

A driver is taking a long tunnel with poor lighting. What is the recommended behaviour?

  1. Drive closer to the vehicle ahead to use its lights
  2. Switch on main beam headlights to see further
  3. Stop inside the tunnel to let the eyes adjust
  4. Remove sunglasses, switch on dipped headlights and keep a safe distance Correct answer.

Explanation

In a tunnel, dipped headlights make the vehicle visible and help the driver see, while removing sunglasses allows the eyes to adapt. A safe following distance must be kept. Main beam would dazzle other drivers and stopping inside is dangerous.

Question 18Advanced training in rational driving based on safety regulations

What does the tachograph symbol showing a bed represent?

  1. Driving time
  2. Other work
  3. Rest period Correct answer.
  4. Availability or waiting time

Explanation

On a tachograph, the bed symbol records a rest period, distinct from availability and other work. Correct use of the symbols ensures the recorded activity matches what the driver actually did. Misuse can result in penalties during inspections.

Question 19Advanced training in rational driving based on safety regulations

A driver notices the steering feels unusually heavy and the vehicle pulls to one side. What is the most appropriate response?

  1. Stop in a safe place and investigate or seek assistance before continuing Correct answer.
  2. Increase tyre pressure at the next fuel station and continue
  3. Continue to the destination and report it afterwards
  4. Ignore it because heavy steering is normal for loaded vehicles

Explanation

Heavy steering combined with pulling to one side can indicate a tyre or steering defect that compromises control. The driver should stop safely and have the problem checked before continuing. Continuing with a suspected defect risks a serious accident.

Question 20Advanced training in rational driving based on safety regulations

Why should a driver avoid using cruise control on a wet or slippery road?

  1. It prevents the use of the brakes
  2. It increases fuel consumption significantly
  3. It can cause loss of control if the vehicle starts to aquaplane Correct answer.
  4. It automatically reduces engine power

Explanation

Cruise control maintains a set speed regardless of grip, so if the vehicle aquaplanes or loses traction it may accelerate unexpectedly. This makes recovery harder and increases the risk of a skid. The driver should retain full manual control in poor conditions.

Question 21Advanced training in rational driving based on safety regulations

What is the main risk of overloading a heavy goods vehicle beyond its permitted maximum mass?

  1. Shorter tyre life only
  2. Reduced braking efficiency and increased stopping distance Correct answer.
  3. Improved braking performance
  4. Lower fuel consumption at high speed

Explanation

Overloading increases the mass that the brakes must stop and can overheat them, reducing braking efficiency and lengthening stopping distance. It also stresses tyres, suspension and the road surface. Exceeding permitted mass is both unsafe and illegal.

Question 22Advanced training in rational driving based on safety regulations

A driver is following a cyclist on a narrow road with limited passing space. What is the safest action?

  1. Wait until there is sufficient clear space and pass with a wide margin Correct answer.
  2. Pass immediately regardless of oncoming traffic
  3. Drive very close behind to encourage the cyclist to speed up
  4. Overtake closely while sounding the horn

Explanation

Cyclists are vulnerable road users and need a generous lateral margin when overtaken. Passing should only occur when there is enough clear space and no oncoming traffic. Pressuring the cyclist or passing closely endangers them.

Question 23Advanced training in rational driving based on safety regulations

How does the reaction distance of a heavy goods vehicle change when the driver is distracted?

  1. It stays the same regardless of attention
  2. It becomes irrelevant if ABS is fitted
  3. It increases because the driver reacts later to a hazard Correct answer.
  4. It decreases because the driver focuses harder

Explanation

Reaction distance depends on the time taken to perceive a hazard and begin braking, so distraction lengthens this time and increases the distance travelled before braking starts. ABS cannot compensate for a delayed reaction. Total stopping distance therefore grows.

Question 24Advanced training in rational driving based on safety regulations

A driver's tachograph shows insufficient daily rest before a shift. What is the correct professional response?

  1. Record the missing rest as availability to avoid penalties
  2. Inform the operator and do not begin driving until a compliant rest has been taken Correct answer.
  3. Start the shift and compensate with extra breaks later
  4. Ignore it because shortfalls are only checked annually

Explanation

Driving without the required daily rest is a serious infringement that endangers road safety. The driver must inform the operator and wait until a compliant rest has been taken before driving. Falsifying records compounds the offence.

Question 25Advanced training in rational driving based on safety regulations

Why is progressive, planned braking preferable to late, heavy braking when approaching a hazard with a loaded vehicle?

  1. It allows the driver to use a higher gear
  2. It disables the ABS for smoother operation
  3. It reduces the legal speed limit on the road
  4. It keeps the brakes cooler and preserves control and stability Correct answer.

Explanation

Planning ahead and braking progressively keeps brake temperatures lower and avoids the risk of fade, while maintaining stability of the loaded vehicle. Late, heavy braking reduces the margin for error and can unsettle the load. Smooth control is the hallmark of defensive driving.

Question 26Advanced training in rational driving based on safety regulations

Under the EU rules on professional driver training (Directive 2003/59/EC), what does the advanced rational-driving module focus on?

  1. Studying company accounting and freight invoicing methods
  2. Applying safety regulations and economical, defensive driving techniques in practice Correct answer.
  3. Learning the mechanical repair procedures for gearboxes and axles
  4. Memorising the customs codes for international border crossings

Explanation

The advanced module builds on the basic qualification and concentrates on rational driving based on safety rules: hazard perception, fuel-efficient driving style and safe handling of the vehicle in real traffic. It is practical and safety-oriented rather than mechanical or administrative in nature.

Question 27Advanced training in rational driving based on safety regulations

Which driving style best matches the principle of rational, economical driving with a heavy goods vehicle?

  1. Holding a low gear at high engine speed to keep full power available
  2. Using the highest possible speed to shorten the time the engine runs
  3. Anticipating traffic flow and keeping a steady momentum with early gear changes Correct answer.
  4. Accelerating hard between junctions and braking late to save time

Explanation

Rational driving means reading the road ahead, avoiding unnecessary acceleration and braking, and using the correct gear at low engine speed. This reduces fuel consumption, wear and accident risk at the same time. Smooth momentum management is the core of the technique.

Question 28Advanced training in rational driving based on safety regulations

What is the main safety benefit of the electronic stability programme (ESP) fitted to many heavy goods vehicles?

  1. It detects a risk of skidding or rollover and selectively brakes individual wheels Correct answer.
  2. It increases engine power when the vehicle is fully loaded
  3. It replaces the service brake during normal deceleration
  4. It automatically maintains a fixed distance behind the vehicle in front

Explanation

ESP uses sensors to detect loss of grip or an impending rollover and applies braking to selected wheels to help keep the vehicle on course. It is an assistance system that intervenes when the vehicle approaches its physical limits. It does not take over normal braking or spacing tasks.

Question 29Advanced training in rational driving based on safety regulations

Why does a heavy goods vehicle need a considerably longer stopping distance than a passenger car at the same speed?

  1. Its tyres have a smaller contact patch than those of a car
  2. Its much greater mass means far more kinetic energy must be dissipated by the brakes Correct answer.
  3. Its driver sits higher and therefore reacts more slowly
  4. Its brakes are deliberately designed to be weaker for durability

Explanation

Kinetic energy rises with mass, so a laden lorry carries far more energy that the brakes must convert into heat before it can stop. This is why the stopping distance is much longer than for a car at the same speed. Mass, not tyre size or seat height, is the decisive factor.

Question 30Advanced training in rational driving based on safety regulations

What does the permitted maximum authorised mass (MAM) of a heavy goods vehicle represent?

  1. The weight the vehicle may tow behind it on a trailer
  2. The maximum load that may be carried on the front axle only
  3. The weight of the empty vehicle with a full tank of fuel
  4. The maximum total weight of the vehicle and its load allowed for road use Correct answer.

Explanation

The MAM is the highest total weight, vehicle plus payload, that the vehicle is legally permitted to have on the road. It is set by the manufacturer and confirmed by the authorities. It differs from the kerb weight and from axle load limits.

Question 31Advanced training in rational driving based on safety regulations

A driver is about to start a shift in winter and the windscreen washer reservoir is nearly empty. Why does this matter for safe driving?

  1. A clear screen is essential for visibility when spray and salt reduce it quickly Correct answer.
  2. Washer fluid is required to cool the engine during cold weather
  3. Washer fluid lubricates the wiper motor and prevents it from burning out
  4. An empty reservoir makes the vehicle exceed its permitted axle load

Explanation

On winter roads, salt and spray can obscure the windscreen within seconds, so a working washer system is a basic safety requirement. Running out mid-journey leaves the driver unable to restore visibility. Checking fluid levels belongs to the pre-departure routine.

Question 32Advanced training in rational driving based on safety regulations

What is the purpose of the lane-departure warning system on a modern heavy goods vehicle?

  1. It warns following traffic when the vehicle is reversing
  2. It records the driver's working time for the transport operator
  3. It steers the vehicle automatically through every bend on the route
  4. It alerts the driver when the vehicle begins to drift out of its lane without indicating Correct answer.

Explanation

The system monitors road markings and warns the driver if the vehicle crosses a line without a deliberate signal, which helps counter distraction and fatigue. It is a warning aid, not a substitute for steering. It has no role in tachograph recording or reversing.

Question 33Advanced training in rational driving based on safety regulations

Why should a driver keep the correct tyre pressure on a heavy goods vehicle, checked when the tyres are cold?

  1. Higher pressure always shortens the braking distance on wet roads
  2. Incorrect pressure harms grip, increases wear and can lead to a blowout Correct answer.
  3. Cold tyres must be inflated above the maximum marked on the sidewall
  4. Tyre pressure has no influence on fuel consumption at all

Explanation

Tyres at the wrong pressure have a smaller or distorted contact patch, wear faster and generate more heat, which raises the risk of failure. Fuel consumption also increases with under-inflation. Pressure must be set according to the manufacturer's figures, never above the sidewall maximum.

Question 34Advanced training in rational driving based on safety regulations

A driver approaches a junction where the traffic light has been green for a long time. What is the safest driving decision?

  1. Ease off slightly and be ready to stop in case the light changes Correct answer.
  2. Sound the horn to warn pedestrians before entering
  3. Maintain full speed to clear the junction before any change
  4. Accelerate hard so following traffic also gets through

Explanation

A light that has been green for a while may change at any moment, and a loaded lorry cannot stop quickly. Easing off and covering the brake gives time to react safely. Accelerating to beat the change increases the risk of a collision or a harsh emergency stop.

Question 35Advanced training in rational driving based on safety regulations

On a motorway a heavy goods vehicle is being overtaken by another lorry that is only slightly faster. What is the appropriate response from the driver being overtaken?

  1. Keep a steady speed and lane position so the manoeuvre finishes predictably Correct answer.
  2. Brake sharply so the other driver can pull in front immediately
  3. Accelerate to prevent the other lorry from completing the pass
  4. Move towards the centre line to make room for the overtaking vehicle

Explanation

Predictability is the key to safe overtaking: the overtaken driver should hold a constant speed and course so the other driver can judge the manoeuvre. Accelerating prolongs the time both vehicles spend side by side. Sudden braking or weaving creates new hazards.

Question 36Advanced training in rational driving based on safety regulations

A driver is entering a roundabout with a fully loaded articulated vehicle. Which technique best keeps the combination stable?

  1. Brake firmly only once the tractor unit is already turning
  2. Enter at normal speed and rely on the trailer brakes to slow it
  3. Accelerate through the curve to keep the trailer taut
  4. Reduce speed before the entry and avoid braking hard while turning Correct answer.

Explanation

Braking while the vehicle is already turning shifts weight forward and sideways and can cause the trailer to push the tractor or even jack-knife. Speed should be reduced on the straight approach so the curve is taken at a steady pace. Smooth inputs keep the combination stable.

Question 37Advanced training in rational driving based on safety regulations

When should a driver of a heavy goods vehicle use the engine brake or retarder on a long descent?

  1. Never, because retarders are prohibited on public roads
  2. Only after the service brakes have begun to fade
  3. Only on the steepest section, with the service brake applied together
  4. Continuously from the start of the descent, in a gear that holds a safe speed Correct answer.

Explanation

The retarder or engine brake should be engaged early and used throughout the descent so that the service brakes are not overheated. Selecting a low enough gear keeps the speed stable without constant pedal braking. This preserves the service brakes for emergencies.

Question 38Advanced training in rational driving based on safety regulations

A driver must pass a group of children playing near the edge of a rural road. What is the most appropriate action?

  1. Slow down substantially and be ready to stop, giving the group a wide berth Correct answer.
  2. Maintain speed and sound the horn repeatedly to move them back
  3. Accelerate past quickly to minimise the time spent near them
  4. Move to the opposite verge and keep the same speed

Explanation

Children behave unpredictably and may run into the road without warning, so speed must be reduced enough to stop if necessary. A wide lateral clearance adds a further safety margin. Horns and speed do not compensate for the inability to stop in time.

Question 39Advanced training in rational driving based on safety regulations

What is the correct way to adjust the exterior mirrors of a heavy goods vehicle before driving?

  1. Set them only after loading, with the driver standing outside the cab
  2. Adjust them while driving so the view matches the current traffic situation
  3. Point them mainly at the sky to check for low bridges
  4. Set them from the normal driving position so the vehicle sides and blind spots are covered Correct answer.

Explanation

Mirrors must be adjusted from the seat in the normal driving posture, because the view changes with the driver's position. The aim is to cover the vehicle flanks and the blind spots as far as the mirrors allow. Adjusting them while moving is distracting and unsafe.

Question 40Advanced training in rational driving based on safety regulations

A driver is driving at night on an unlit road and is dazzled by the headlights of an oncoming vehicle. What is the safest response?

  1. Reduce speed and look towards the left edge of the road until the vehicle has passed Correct answer.
  2. Accelerate to pass the oncoming vehicle as quickly as possible
  3. Switch on high beam to make the other driver dip theirs
  4. Close the eyes briefly to protect them from the glare

Explanation

When dazzled, the driver temporarily loses night vision, so speed must be reduced and the gaze directed towards the near edge of the carriageway to stay in lane. High beam would worsen the glare for both drivers. Accelerating shortens the reaction margin while visibility is impaired.

Question 41Advanced training in rational driving based on safety regulations

Why does a driver need to allow extra headroom when passing under a bridge with a vehicle whose height is close to the signed limit?

  1. Suspension movement, load settlement and road camber can raise the effective height Correct answer.
  2. Bridge signs refer only to the width of the opening
  3. Vehicle height decreases as fuel is consumed during the journey
  4. The signed height always includes a hidden safety margin of one metre

Explanation

The stated clearance is a minimum figure, and the vehicle's effective height can vary with suspension travel, load distribution and the camber of the road beneath the bridge. A marginal fit therefore carries a real risk of contact. Drivers should know their exact travelling height and leave a margin.

Question 42Advanced training in rational driving based on safety regulations

How should a driver use the retarder and brakes when the vehicle is descending a slippery, wet hill?

  1. Rely only on the handbrake to control the descent
  2. Apply full retarder power immediately to slow down as fast as possible
  3. Disengage the retarder completely and coast in neutral
  4. Use gentle, progressive retarder settings and avoid sudden braking that could lock the wheels Correct answer.

Explanation

On a wet descent, abrupt retardation can break traction and cause a skid, so the retarder should be applied gently and progressively while a low gear controls speed. Coasting in neutral removes engine braking and is prohibited in principle. Smooth inputs keep the tyres gripping.

Question 43Advanced training in rational driving based on safety regulations

A driver notices that the vehicle's air pressure warning buzzer sounds and the pressure gauge reads low shortly after start-up. What is the correct action?

  1. Drive off immediately and let the pressure build during the journey
  2. Pump the brake pedal repeatedly to raise the pressure faster
  3. Stop and wait for the system to build pressure, and do not drive until the warning clears Correct answer.
  4. Ignore the warning if the brakes feel normal when tested

Explanation

Heavy goods vehicles rely on compressed air for braking, and low pressure means the brakes may not perform correctly. The driver must let the system reach operating pressure and have any persistent fault investigated. Moving off with an active warning is unsafe.

Question 44Advanced training in rational driving based on safety regulations

A driver is planning a route through a residential area with narrow streets and parked cars. Which planning decision best supports safe driving?

  1. Selecting the shortest route regardless of street width
  2. Choosing a route that avoids tight turns and allows adequate space for the vehicle Correct answer.
  3. Planning to drive through at peak times to use the traffic flow
  4. Relying on other drivers to reverse if the vehicle gets stuck

Explanation

Route planning for a large vehicle should prioritise roads wide enough for the vehicle to pass and turn safely, even if the distance is slightly longer. Narrow streets with parked cars leave little margin and increase the chance of a collision. Anticipating this before departure is part of rational driving.

Question 45Advanced training in rational driving based on safety regulations

What is the main reason for engaging the differential lock only when it is actually needed, such as on a slippery surface?

  1. It disables the anti-lock braking system for the whole journey
  2. It permanently increases fuel consumption even when disengaged
  3. It reduces the vehicle's ability to turn and should be disengaged once grip returns Correct answer.
  4. It is only permitted on private property and never on public roads

Explanation

A locked differential forces the wheels to turn at the same speed, which improves traction on a slippery surface but resists steering and can cause transmission wind-up on dry road. It should therefore be used only while needed and disengaged as soon as grip is restored. This is a handling consideration, not a legal prohibition.

Question 46Advanced training in rational driving based on safety regulations

A driver's vehicle has a partially faulty brake on one side, causing it to pull to the right when braking. How should the driver proceed?

  1. Use only the retarder for the rest of the trip
  2. Reduce the load and continue at lower speed
  3. Take the vehicle out of service and have the fault repaired before continuing Correct answer.
  4. Compensate by steering left while braking and continue the journey

Explanation

Uneven braking is a serious defect that can cause the vehicle to swerve or jack-knife, especially in an emergency stop, and it is a legal roadworthiness issue. The vehicle must not be driven until the fault is rectified. Compensating with steering does not remove the underlying danger.

Question 47Advanced training in rational driving based on safety regulations

Why does a driver of a high-sided vehicle need to reduce speed significantly in strong crosswinds, particularly on exposed bridges?

  1. Large side area and high centre of gravity make the vehicle prone to being pushed or rolled Correct answer.
  2. Crosswinds only affect the tyres and have no effect on the body
  3. The engine loses power in windy conditions and cannot maintain speed
  4. Braking performance improves in wind, so lower speed is unnecessary

Explanation

A high-sided lorry presents a large surface to the wind, and a strong gust can push it sideways or contribute to a rollover, especially on exposed structures. Reducing speed limits the lateral force and gives the driver time to correct. Vehicle height and side area, not engine power, are the key factors.

Question 48Advanced training in rational driving based on safety regulations

A driver is following a slow tractor on a single-carriageway road with a short visibility distance ahead. Why is overtaking inappropriate even if the road seems clear?

  1. Tractors always travel faster than they appear from behind
  2. The available sight distance is too short to guarantee the manoeuvre can be completed safely Correct answer.
  3. Overtaking is prohibited on all single-carriageway roads
  4. The lorry's engine cannot provide enough acceleration to pass

Explanation

An overtake is only safe if the driver can see far enough to be certain of completing it without conflicting with oncoming or emerging traffic. A short sight distance means a hidden vehicle could appear before the manoeuvre ends. The decision must be based on visible clearance, not on an assumption that the road is empty.

Question 49Advanced training in rational driving based on safety regulations

Why does a driver benefit from a planned sequence of observations, such as mirrors before signalling and manoeuvring, when changing lanes in dense traffic?

  1. It ensures hazards are detected in a consistent order before any action is taken Correct answer.
  2. It guarantees other drivers will always give way
  3. It shortens the vehicle's stopping distance at high speed
  4. It allows the driver to skip the blind-spot check

Explanation

A fixed observation routine makes the driver check mirrors and blind spots in the same reliable order every time, so a hazard is less likely to be missed under pressure. It supports decision-making but does not change the physics of stopping or oblige others to yield. Consistency is what reduces error.

Question 50Advanced training in rational driving based on safety regulations

A driver must negotiate a tight left turn in a loaded articulated vehicle on a road with a high kerb. Which combination of actions best protects other road users?

  1. Rely on the trailer's rear wheels tracking exactly in the path of the tractor
  2. Ignore the mirrors during the turn to concentrate on the steering
  3. Slow well before the turn, use the mirrors and swing out only as far as is safe and legal Correct answer.
  4. Turn sharply at speed to keep the trailer inside the lane

Explanation

Articulated vehicles cut in on turns because the trailer's wheels track inside the tractor's path, so the driver must slow early and monitor the mirrors for cyclists or pedestrians on the inside. Swinging out is necessary but must stay within what is safe and permitted. Speed and inattention are the main causes of kerb strikes and collisions.