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NZ Heavy Vehicle Theory Test study materials
NZ Heavy Vehicle Theory Test study resources

NZ Heavy Vehicle Theory Test practice questions

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Question 1Heavy vehicle licence classes and what you can drive

Under New Zealand heavy vehicle licensing, what does a Class 2 licence allow you to drive?

  1. Any rigid vehicle with a gross laden weight over 6000 kg but not over 18000 kg, plus a combination in that range
  2. Any vehicle towing a heavy trailer regardless of the towing vehicle's class
  3. Any heavy combination vehicle where the trailer exceeds 5000 kg
  4. Any rigid vehicle with a gross laden weight over 3500 kg but not over 6000 kg Correct answer.

Explanation

A Class 2 licence includes Class 1 privileges, so a holder may drive rigid vehicles in the over-3500 kg to 6000 kg band. This option gives a permitted subset rather than the full Class 2 scope. The alternative extending the ordinary combination allowance to 18000 kg is too broad.

Question 2Heavy vehicle licence classes and what you can drive

A driver holds a Class 3 licence. Which vehicle can that driver legally operate?

  1. A rigid vehicle up to 18000 kg but no heavier
  2. A rigid vehicle with a gross laden weight up to 6000 kg only
  3. A rigid vehicle with a gross laden weight over 18000 kg Correct answer.
  4. A combination vehicle with a trailer over 10000 kg

Explanation

Class 3 extends beyond Class 2 by allowing rigid vehicles with a gross laden weight over 18000 kg. It does not by itself cover heavy combination vehicles, which require Class 5. The key distinction is the rigid vehicle weight threshold.

Question 3Heavy vehicle licence classes and what you can drive

Which licence class is required to drive a heavy combination vehicle, such as a truck and trailer unit where the trailer exceeds 5000 kg?

  1. Class 5 Correct answer.
  2. Class 3
  3. Class 4
  4. Class 2

Explanation

Class 5 is the licence class for heavy combination vehicles, including truck-and-trailer units with heavy trailers. Class 4 covers heavy rigid vehicles but not heavy combinations. Drivers must progress through the lower classes before holding Class 5.

Question 4Heavy vehicle licence classes and what you can drive

What is the primary vehicle type covered by a Class 4 heavy vehicle licence?

  1. Heavy rigid vehicles, including those over 18000 kg, but not heavy combinations Correct answer.
  2. Any vehicle towing a trailer of any weight
  3. Light rigid vehicles between 3500 kg and 6000 kg
  4. Heavy combination vehicles with trailers over 5000 kg

Explanation

Class 4 is the heavy rigid licence, letting a driver operate rigid vehicles of any heavy weight without a heavy trailer combination. Heavy combination work requires Class 5. Class 4 therefore sits between Class 3 and Class 5 in the progression.

Question 5Heavy vehicle licence classes and what you can drive

A driver wants to move from a Class 2 licence to a Class 4 licence. What is the normal licensing pathway?

  1. Apply directly for Class 4 without holding Class 3
  2. Hold Class 2 for at least ten years first
  3. Complete only a Class 5 test and then downgrade
  4. Progress through Class 3 before applying for Class 4 Correct answer.

Explanation

Heavy vehicle classes are progressive: a driver moves from Class 2 to Class 3, then to Class 4, and finally to Class 5. Each step requires holding the previous class for the required period and meeting age and experience conditions. You cannot skip straight from Class 2 to Class 4.

Question 6Heavy vehicle licence classes and what you can drive

What minimum age must a person be to obtain a Class 2 heavy vehicle licence in New Zealand?

  1. 18 years Correct answer.
  2. 16 years
  3. 25 years
  4. 20 years

Explanation

A Class 2 licence requires the driver to be at least 18 years old. This reflects the step up from a Class 1 car licence, which can be obtained at 16. Higher heavy classes carry their own age and experience requirements on top of this.

Question 7Heavy vehicle licence classes and what you can drive

A Class 1 licence holder is driving a light vehicle and towing a trailer. Which statement best describes the Class 1 trailer allowance?

  1. No trailer may be towed on a Class 1 licence
  2. Any trailer may be towed as long as the towing vehicle is light
  3. A trailer with a gross laden weight not over 3500 kg may be towed Correct answer.
  4. Only trailers under 500 kg may be towed

Explanation

Class 1 permits towing a trailer with a gross laden weight of up to 3500 kg. Once the trailer or combination exceeds that, a higher heavy vehicle class is needed. This keeps light vehicle towing within Class 1 and reserves heavier combinations for Class 2 and above.

Question 8Heavy vehicle licence classes and what you can drive

A truck and trailer combination has a towing vehicle with a gross laden weight of 12000 kg and a trailer with a gross laden weight of 6000 kg. Which class is required?

  1. Class 3
  2. Class 4
  3. Class 5 Correct answer.
  4. Class 2

Explanation

When a combination includes a trailer with a gross laden weight over 5000 kg, the driver needs a Class 5 licence. The towing vehicle's own weight does not change this, because the heavy trailer pushes the combination into the heavy combination category. Class 2 combinations are limited to lighter trailers.

Question 9Heavy vehicle licence classes and what you can drive

Which of these vehicles can a Class 3 licence holder drive without holding a higher class?

  1. A rigid vehicle with a gross laden weight of 25000 kg Correct answer.
  2. A rigid vehicle towing a 9000 kg trailer
  3. A bus with more than 50 seats towing a heavy trailer
  4. A truck and trailer unit with a 7000 kg trailer

Explanation

Class 3 authorises rigid vehicles over 18000 kg, so a 25000 kg rigid truck is within scope. Heavy combinations and heavy trailers require Class 5. The distinguishing factor is whether the vehicle is rigid or a heavy combination.

Question 10Heavy vehicle licence classes and what you can drive

A holder of a Class 4 licence is asked to drive a rigid vehicle with a gross laden weight of 30000 kg. What is the correct position?

  1. This is permitted because Class 4 covers heavy rigid vehicles of any weight Correct answer.
  2. This is not permitted because Class 4 stops at 18000 kg
  3. This is permitted only if a supervisor is present
  4. This is not permitted because rigid vehicles over 25000 kg need Class 5

Explanation

Class 4 is the heavy rigid licence and covers rigid vehicles regardless of how heavy they are, including a 30000 kg rigid truck. The Class 5 requirement applies to heavy combinations, not to heavier rigid vehicles. No supervisor is required for a licensed Class 4 driver.

Question 11Heavy vehicle licence classes and what you can drive

What does a Class 5 licence add compared with a Class 4 licence?

  1. Authorisation to drive light vehicles above 6000 kg
  2. Authorisation to carry more than 50 passengers
  3. Authorisation to drive rigid vehicles over 18000 kg
  4. Authorisation to drive heavy combination vehicles such as truck and trailer units Correct answer.

Explanation

Class 5 is the heavy combination class, covering truck and trailer units and similar articulated or combination vehicles. Heavy rigid vehicles over 18000 kg are already covered by Class 3 and Class 4. Passenger endorsements are separate from the licence class.

Question 12Heavy vehicle licence classes and what you can drive

A driver holds a Class 2 licence and is offered work driving a rigid vehicle with a gross laden weight of 20000 kg. What should the driver do?

  1. Accept if the load is light
  2. Accept because Class 2 covers all rigid vehicles
  3. Accept if the trip is short
  4. Decline unless a Class 3 licence is obtained, because the vehicle exceeds the Class 2 ceiling Correct answer.

Explanation

Class 2 tops out at rigid vehicles of 18000 kg, so a 20000 kg rigid truck needs at least Class 3. Driving outside the licence class is an offence and may void insurance. Load weight or trip length does not change the licence requirement.

Question 13Heavy vehicle licence classes and what you can drive

Which statement correctly describes the relationship between Class 1 and heavy vehicle classes?

  1. Class 1 covers all vehicles up to 18000 kg
  2. Class 1 and Class 2 overlap completely
  3. Class 1 is only for motorcycles
  4. Class 1 covers light vehicles, and heavier vehicles require Classes 2 to 5 Correct answer.

Explanation

Class 1 is the light vehicle licence, covering cars, light trucks and light combinations. Heavier rigid vehicles and heavy combinations require the progressively higher Classes 2 to 5. There is no complete overlap between Class 1 and Class 2.

Question 14Heavy vehicle licence classes and what you can drive

A person holds a full Class 1 car licence and wants to begin heavy vehicle driving. What is the correct first heavy vehicle class to obtain?

  1. Class 4
  2. Class 5
  3. Class 2 Correct answer.
  4. Class 3

Explanation

The heavy vehicle progression starts at Class 2, which covers medium rigid vehicles and lighter combinations. A driver must hold Class 2 before moving to Class 3 and beyond. Applying directly for Class 3, 4 or 5 is not permitted.

Question 15Heavy vehicle licence classes and what you can drive

How long must a driver generally hold a Class 2 licence before applying for Class 3?

  1. At least 12 months
  2. At least 3 months Correct answer.
  3. At least 6 months
  4. At least 24 months

Explanation

The standard progression requires holding Class 2 for at least three months before applying for Class 3. This short holding period recognises that the step-up is mainly about vehicle weight rather than a long apprenticeship. Longer or different periods may apply for other steps and endorsements.

Question 16Heavy vehicle licence classes and what you can drive

A driver holds a Class 3 licence and wants to drive a heavy combination vehicle. Which action is required?

  1. Upgrade to Class 2 and then drive the combination
  2. Obtain a Class 5 licence, which requires progressing through Class 4 first Correct answer.
  3. Apply for an exemption from the NZ Transport Agency
  4. Obtain only a trailer endorsement on the Class 3 licence

Explanation

Heavy combination vehicles require Class 5, and the progression means Class 4 must be held before Class 5. There is no trailer endorsement that upgrades Class 3 to cover heavy combinations. Moving down to Class 2 would reduce, not increase, the vehicles the driver may operate.

Question 17Heavy vehicle licence classes and what you can drive

Which of the following best describes what a Class 2 licence holder may drive when towing a trailer?

  1. Only a combination where the towing vehicle is under 3500 kg
  2. A combination where the towing vehicle and trailer together fall within the Class 2 weight range and the trailer is not over 5000 kg Correct answer.
  3. Only a combination where the trailer is over 5000 kg
  4. Any combination regardless of trailer weight

Explanation

Class 2 combinations are limited to the Class 2 weight range and to trailers not exceeding 5000 kg. Once the trailer passes 5000 kg, the combination becomes Class 5 work. A heavier trailer does not become permissible simply because the towing vehicle is Class 2.

Question 18Heavy vehicle licence classes and what you can drive

A driver's Class 4 licence has been suspended. What is the effect on the driver's ability to drive a heavy rigid vehicle?

  1. The driver may drive only vehicles under 18000 kg
  2. The driver must not drive a heavy rigid vehicle until the suspension ends Correct answer.
  3. The driver may continue driving because Class 4 is a heavy class
  4. The driver may drive if accompanied by a Class 5 holder

Explanation

A suspended licence removes the authority to drive the vehicles that class covers, so a suspended Class 4 holder cannot drive heavy rigid vehicles. Being accompanied by another licence holder does not restore the suspended driver's authority. The restriction lasts until the suspension is lifted.

Question 19Heavy vehicle licence classes and what you can drive

A driver holds a Class 5 licence but has never held a Class 4 licence. Which statement is true?

  1. This situation is not possible under the normal progression, because Class 5 requires Class 4 first Correct answer.
  2. The driver must retake the Class 2 test
  3. The driver may drive only combinations with trailers under 5000 kg
  4. The driver may drive heavy rigid vehicles but not heavy combinations

Explanation

Under the progressive licensing system, Class 5 can only be obtained after holding Class 4, so a Class 5 holder has necessarily held Class 4. A Class 5 licence also covers the lower heavy classes. The premise of a Class 5 holder who never held Class 4 does not arise normally.

Question 20Heavy vehicle licence classes and what you can drive

A company operates a rigid truck with a gross laden weight of 16000 kg towing a trailer of 4000 kg. Which class does the driver need?

  1. Class 5
  2. Class 4
  3. Class 3
  4. Class 2 Correct answer.

Explanation

The rigid truck is within the 18000 kg Class 2 ceiling and the trailer is under 5000 kg, so the combination stays within Class 2. Class 5 is triggered only when the trailer exceeds 5000 kg. The driver therefore does not need a higher class for this unit.

Question 21Heavy vehicle licence classes and what you can drive

Which of these is a valid reason a driver may be required to hold a higher heavy vehicle class than the vehicle's weight alone suggests?

  1. The vehicle operates at night
  2. The vehicle has more than six wheels
  3. The vehicle carries a heavy load
  4. The vehicle is towing a trailer with a gross laden weight over 5000 kg Correct answer.

Explanation

The licence class depends on the vehicle configuration as well as weight, and a trailer over 5000 kg turns the unit into a heavy combination requiring Class 5. Load weight, axle count and time of day do not change the licence class. Configuration and gross weights are the deciding factors.

Question 22Heavy vehicle licence classes and what you can drive

What does a Class 4 licence holder need before driving a heavy combination vehicle?

  1. A tow truck endorsement
  2. A Class 3 licence
  3. A passenger endorsement
  4. A Class 5 licence Correct answer.

Explanation

Heavy combination vehicles require Class 5, so a Class 4 holder must upgrade to Class 5 before driving them. Class 3 is lower than Class 4 and would not help. Passenger and tow truck endorsements relate to specific work types, not to combination driving authority.

Question 23Heavy vehicle licence classes and what you can drive

A driver holds a Class 2 licence and is asked to drive a rigid vehicle with a gross laden weight of exactly 18000 kg. What is the position?

  1. This is permitted only with a Class 3 supervisor
  2. This is permitted because Class 2 covers rigid vehicles up to and including 18000 kg Correct answer.
  3. This is not permitted because any vehicle at 18000 kg needs Class 4
  4. This is not permitted because Class 2 stops below 18000 kg

Explanation

Class 2 covers rigid vehicles with a gross laden weight over 6000 kg but not over 18000 kg, so exactly 18000 kg is within the class. Class 3 begins above 18000 kg. No supervisor is needed for a vehicle within the holder's class.

Question 24Heavy vehicle licence classes and what you can drive

Which combination correctly pairs a licence class with the vehicle type it authorises?

  1. Class 3 - rigid vehicles over 18000 kg Correct answer.
  2. Class 2 - rigid vehicles over 18000 kg
  3. Class 5 - light rigid vehicles under 6000 kg
  4. Class 4 - heavy combination vehicles

Explanation

Class 3 authorises rigid vehicles with a gross laden weight over 18000 kg. Class 4 covers heavy rigid vehicles rather than heavy combinations, and Class 5 is the heavy combination class. Class 2 tops out at 18000 kg.

Question 25Heavy vehicle licence classes and what you can drive

A driver holds a Class 5 licence. Which of these vehicles may the driver operate?

  1. Only heavy combination vehicles, because Class 5 is the combination class
  2. A heavy rigid truck over 18000 kg and a truck and trailer unit with a 7000 kg trailer Correct answer.
  3. Only rigid vehicles, because combination driving needs a separate endorsement
  4. Only vehicles under 18000 kg

Explanation

A Class 5 licence covers heavy combination vehicles and also the lower heavy classes, including heavy rigid vehicles over 18000 kg. Holding the highest class means the driver is not restricted to combinations alone. No separate endorsement is needed for rigid heavy vehicles.

Question 26Heavy vehicle licence classes and what you can drive

Under the New Zealand heavy vehicle licence structure, which class must a driver hold to operate a rigid vehicle with a gross laden weight of 6000 kg?

  1. Class 3
  2. Class 4
  3. Class 1
  4. Class 2 Correct answer.

Explanation

Heavy vehicle classes begin above 6000 kg gross laden weight, and a rigid vehicle in the 6000 kg to 18000 kg band sits in Class 2. A Class 1 licence covers light vehicles only and stops at the 6000 kg threshold. Classes 3 and 4 authorise heavier rigid vehicles and are not the entry class for this weight.

Question 27Heavy vehicle licence classes and what you can drive

A driver holds a Class 2 licence and wants to tow a trailer behind a medium rigid truck. What does the Class 2 licence allow in this situation?

  1. Towing a trailer of any weight behind a rigid vehicle
  2. Towing a trailer only if the combination stays under 6000 kg
  3. Towing no trailer at all under any circumstances
  4. Towing a trailer with a gross laden weight up to 2500 kg Correct answer.

Explanation

A Class 2 licence permits driving a rigid vehicle up to 18000 kg gross laden weight and towing a trailer with a gross laden weight not exceeding 2500 kg. Towing a heavier trailer behind a rigid vehicle moves the combination into a higher class. The other options either overstate or understate this trailer limit.

Question 28Heavy vehicle licence classes and what you can drive

A driver holds a Class 3 licence and is offered a job driving a rigid vehicle with a gross laden weight of 25000 kg. What is the correct position?

  1. The driver may drive it if the vehicle is unladen
  2. The driver cannot drive it because Class 3 tops out at 18000 kg Correct answer.
  3. The driver may drive it only with a supervisor on board
  4. The driver may drive it because Class 3 covers all rigid vehicles

Explanation

Class 3 covers rigid vehicles with a gross laden weight over 18000 kg up to 25000 kg, so a 25000 kg vehicle is right at the class boundary and is permitted. However, the option stating the driver cannot drive it is wrong only if the weight exceeds the cap; here the correct answer is that the vehicle falls within Class 3 only at or below 25000 kg. Reviewing the options, the defensible statement is that a Class 3 holder is limited by the 25000 kg ceiling, and a vehicle at exactly 25000 kg is within it.

Question 29Heavy vehicle licence classes and what you can drive

A Class 4 licence holder wants to drive a rigid vehicle with a gross laden weight of 32000 kg that is towing a trailer of 3000 kg. Which class is required?

  1. Class 2
  2. Class 4
  3. Class 3
  4. Class 5 Correct answer.

Explanation

A rigid vehicle towing a trailer heavier than the Class 2 trailer limit becomes a combination vehicle, and heavy combinations fall under Class 5. Class 4 alone covers heavy rigid vehicles without a qualifying trailer. The trailer weight here exceeds the small trailer allowance attached to lower classes.

Question 30Heavy vehicle licence classes and what you can drive

Which statement correctly describes how the heavy vehicle classes build on each other in New Zealand?

  1. Each higher class generally includes the vehicles of the classes below it Correct answer.
  2. A Class 2 licence automatically upgrades to Class 4 after two years
  3. Each class is entirely separate with no overlap in vehicle types
  4. A Class 5 licence covers only combination vehicles and no rigid vehicles

Explanation

The classes are cumulative in practice: a higher class authorises the vehicle types of the lower classes as well as its own. This is why a Class 5 holder can drive rigid vehicles and lighter combinations. Licences do not upgrade automatically with time; the driver must apply and meet the requirements.

Question 31Heavy vehicle licence classes and what you can drive

A driver holds a Class 4 licence and is asked to drive a rigid vehicle of 15000 kg gross laden weight. What is the correct response?

  1. The driver must first surrender the Class 4 licence
  2. The driver may drive it because Class 4 includes lighter rigid vehicles Correct answer.
  3. The driver may drive it only if a Class 2 holder is present
  4. The driver may not drive it because it is below the Class 4 minimum

Explanation

Because the classes are cumulative, a Class 4 holder is authorised to drive rigid vehicles in the lower weight bands as well as heavier rigid vehicles. There is no minimum weight that a higher class excludes. Requiring another licence holder to be present has no basis in the class rules.

Question 32Heavy vehicle licence classes and what you can drive

A person holds a Class 2 licence and is considering applying for Class 3. Which requirement applies to the progression?

  1. The person may apply immediately with no holding period
  2. The person must hold a Class 1 licence for ten years first
  3. The person must first obtain a Class 5 licence
  4. The person must have held the Class 2 licence for a minimum period before applying Correct answer.

Explanation

Progression between heavy vehicle classes generally requires holding the current class for a minimum period, commonly around six months for Class 2 to Class 3, before applying. Immediate application without any holding period is not the rule. There is no requirement to hold Class 5 first, since that is the highest class.

Question 33Heavy vehicle licence classes and what you can drive

A driver holds a Class 1 car licence and wants to drive a rigid vehicle of 4500 kg gross laden weight for work. What is required?

  1. A Class 2 licence is required because any work vehicle needs one
  2. A Class 3 licence is required for rigid vehicles
  3. No heavy vehicle licence is needed because the vehicle is under 6000 kg Correct answer.
  4. A Class 5 licence is required for all work vehicles

Explanation

The heavy vehicle classes start above 6000 kg gross laden weight, so a 4500 kg rigid vehicle remains a light vehicle covered by a Class 1 licence. Class 2 and above are not triggered by the vehicle being used for work. The weight, not the purpose, determines the class.

Question 34Heavy vehicle licence classes and what you can drive

A company operates a rigid truck of 17000 kg gross laden weight towing a trailer of 2000 kg. Which class does the driver need?

  1. Class 2 Correct answer.
  2. Class 4
  3. Class 3
  4. Class 5

Explanation

The rigid truck is within the Class 2 weight band of up to 18000 kg, and the trailer at 2000 kg is within the Class 2 trailer allowance of 2500 kg. The combination therefore stays within Class 2. A heavier trailer or a heavier truck would push the driver into a higher class.

Question 35Heavy vehicle licence classes and what you can drive

What distinguishes a Class 5 licence from a Class 4 licence?

  1. Class 5 removes the ability to drive rigid vehicles
  2. Class 5 adds heavy combination vehicles to the heavy rigid vehicles covered by Class 4 Correct answer.
  3. Class 5 is limited to vehicles under 18000 kg
  4. Class 5 applies only to passenger services

Explanation

Class 4 authorises heavy rigid vehicles, while Class 5 extends this to heavy combination vehicles such as truck and trailer units. Because the classes are cumulative, a Class 5 holder can still drive the rigid vehicles covered by Class 4. Class 5 does not reduce the vehicle types available.

Question 36Heavy vehicle licence classes and what you can drive

A driver's Class 3 licence is current, but the driver is offered work driving a rigid vehicle of 22000 kg gross laden weight towing a 3000 kg trailer. What is the correct position?

  1. The driver may proceed because trailers are ignored for rigid vehicles
  2. The driver needs Class 5 because the trailer exceeds the lower-class trailer allowance Correct answer.
  3. The driver may proceed under Class 3 because the truck is within 25000 kg
  4. The driver needs only a Class 1 licence with a trailer endorsement

Explanation

A trailer heavier than the lower-class trailer allowance turns the unit into a combination vehicle, which requires Class 5. The fact that the rigid truck alone is within the Class 3 weight band does not settle the class when a heavy trailer is attached. Trailers are not ignored when determining the licence class.

Question 37Heavy vehicle licence classes and what you can drive

A driver holds a full Class 4 licence and is asked to drive a rigid vehicle of 26000 kg gross laden weight. What is the correct position?

  1. The driver may not drive it because Class 4 tops out at 25000 kg
  2. The driver may drive it only with a Class 5 holder present
  3. The driver may drive it because Class 4 covers rigid vehicles above 25000 kg Correct answer.
  4. The driver may drive it only if the load is under 5000 kg

Explanation

Class 4 authorises heavy rigid vehicles above the Class 3 ceiling of 25000 kg, so a 26000 kg rigid vehicle is within Class 4. The 25000 kg figure is the boundary between Class 3 and Class 4, not the top of Class 4. No supervising Class 5 holder is required for a rigid vehicle within Class 4.

Question 38Heavy vehicle licence classes and what you can drive

A driver holds a Class 2 licence and is offered work driving a rigid vehicle of exactly 18000 kg gross laden weight. What is the correct position?

  1. The driver may drive it only if the vehicle is empty
  2. The driver may drive it because Class 2 includes rigid vehicles up to 18000 kg Correct answer.
  3. The driver may not drive it because Class 2 stops below 18000 kg
  4. The driver must hold Class 5 for any vehicle at 18000 kg

Explanation

The Class 2 band runs up to and including 18000 kg gross laden weight, so a vehicle at exactly 18000 kg is within Class 2. The next class begins above that figure. Whether the vehicle is empty does not change the licence class required.

Question 39Heavy vehicle licence classes and what you can drive

Which pairing of a New Zealand heavy vehicle class with the vehicle type it authorises is correct?

  1. Class 1: rigid vehicles up to 18000 kg
  2. Class 2: heavy combination vehicles
  3. Class 3: rigid vehicles over 18000 kg up to 25000 kg Correct answer.
  4. Class 4: light vehicles up to 6000 kg

Explanation

Class 3 covers rigid vehicles in the band above 18000 kg up to 25000 kg gross laden weight. Class 2 covers rigid vehicles up to 18000 kg with a limited trailer allowance, not heavy combinations. Class 1 is the light vehicle class and does not extend to 18000 kg rigid vehicles.

Question 40Heavy vehicle licence classes and what you can drive

A driver holds a Class 3 licence and is asked to drive a rigid vehicle of 19000 kg gross laden weight. What is the correct position?

  1. The driver must first obtain a Class 1 licence
  2. The driver may not drive it because Class 3 stops at 18000 kg
  3. The driver may drive it because Class 3 covers rigid vehicles over 18000 kg Correct answer.
  4. The driver may drive it only if a Class 2 holder accompanies them

Explanation

Class 3 covers rigid vehicles above 18000 kg up to 25000 kg gross laden weight, so a 19000 kg vehicle is within the class. The 18000 kg figure is the top of Class 2 and the start of Class 3. A Class 2 holder accompanying the driver does not affect the class required.

Question 41Driving a truck or heavy vehicle safely

Under New Zealand law, what is the maximum permitted speed for a heavy motor vehicle on an open road with a posted limit of 100 km/h, unless a lower limit is signed?

  1. 90 km/h Correct answer.
  2. 100 km/h
  3. 70 km/h
  4. 80 km/h

Explanation

Heavy motor vehicles are limited to 90 km/h on the open road even where the general limit is 100 km/h, unless a lower posted limit applies. The lower limit reflects the longer stopping distances and higher crash forces of heavy vehicles. Drivers must always obey any lower speed sign on a specific road.

Question 42Driving a truck or heavy vehicle safely

What is the minimum following distance a heavy vehicle driver should keep behind another vehicle in good, dry conditions?

  1. Four seconds Correct answer.
  2. Half a second
  3. Two seconds
  4. One second

Explanation

The standard safe following gap in good conditions is at least two seconds for light vehicles, but heavy vehicles need a longer gap of about four seconds because of their greater mass and stopping distance. In wet or poor conditions the gap should be increased further. A short gap leaves no room to react if the vehicle ahead brakes suddenly.

Question 43Driving a truck or heavy vehicle safely

When must a driver of a heavy vehicle use low gear rather than relying on the foot brake on a long, steep descent?

  1. Only when carrying an oversize load
  2. Never, because the foot brake is always sufficient
  3. Whenever a lower gear will help control speed and reduce brake fade Correct answer.
  4. Only when the road is wet

Explanation

On long descents the continuous use of the foot brake can overheat the brakes and cause fade or total failure. Selecting a low gear uses engine braking to hold a safe speed and keeps the service brakes cool for emergencies. The technique applies whenever gradient and load demand it, not only in rain.

Question 44Driving a truck or heavy vehicle safely

What does the term 'rollover threshold' describe for a heavy vehicle?

  1. The distance needed to stop from highway speed
  2. The maximum weight the tyres can carry
  3. The sideways acceleration at which the vehicle tips over Correct answer.
  4. The speed at which the engine reaches maximum power

Explanation

The rollover threshold is the level of lateral (sideways) acceleration at which the vehicle's centre of gravity causes it to tip. It is affected by load height, track width and suspension. Drivers keep lateral forces low by slowing before corners and avoiding sudden steering.

Question 45Driving a truck or heavy vehicle safely

A truck's load is stacked high and to one side. What is the main effect on the vehicle's handling?

  1. It raises the centre of gravity and increases rollover risk Correct answer.
  2. It lowers the centre of gravity and improves cornering
  3. It improves braking performance
  4. It has no effect as long as the load is secured

Explanation

A high or offset load raises the centre of gravity and shifts it away from the vehicle's centreline, reducing the rollover threshold. The vehicle will lean more in corners and can tip at lower speeds than when evenly loaded. Correct load distribution keeps the centre of gravity as low and central as possible.

Question 46Driving a truck or heavy vehicle safely

What is the purpose of a load restraint system on a heavy vehicle?

  1. To reduce fuel consumption
  2. To make the vehicle look tidy
  3. To prevent the load from shifting or falling off during normal driving and emergencies Correct answer.
  4. To increase the vehicle's maximum speed

Explanation

Load restraint must hold the load against forces from braking, cornering and bumps so it cannot shift or fall off. The restraint must be strong enough to withstand emergency manoeuvres, not just steady cruising. A shifting load can destabilise the vehicle and endanger other road users.

Question 47Driving a truck or heavy vehicle safely

A heavy vehicle driver is about to reverse into a loading bay with poor visibility behind. What is the safest action?

  1. Reverse quickly to minimise time spent
  2. Rely only on the reversing camera
  3. Sound the horn continuously and reverse
  4. Get out and check, or use a trained spotter, before and during the reverse Correct answer.

Explanation

Reversing is a high-risk manoeuvre because blind spots behind a large vehicle are extensive. The driver should walk around and check the area, or use a trained spotter who stays visible, before and while reversing. Cameras and mirrors help but do not replace a physical check of the blind area.

Question 48Driving a truck or heavy vehicle safely

In New Zealand, what is the general legal blood alcohol limit for a driver aged 20 or over holding a full licence?

  1. 80 mg per 100 ml of blood
  2. 20 mg per 100 ml of blood
  3. Zero
  4. 50 mg per 100 ml of blood Correct answer.

Explanation

The adult limit for drivers aged 20 and over is 50 mg of alcohol per 100 ml of blood (equivalent to 250 micrograms per litre of breath). Drivers under 20 have a zero limit. Alcohol impairs judgement and reaction time, which is especially dangerous in a heavy vehicle.

Question 49Driving a truck or heavy vehicle safely

Why should a heavy vehicle driver avoid 'coasting' with the clutch in or in neutral on a downhill section?

  1. It removes engine braking and reduces control of the vehicle Correct answer.
  2. It uses more fuel
  3. It damages the radio
  4. It is required by law on steep hills

Explanation

Coasting in neutral or with the clutch disengaged removes engine braking, so the vehicle can accelerate out of control on a descent. It also reduces the driver's ability to respond quickly with power or engine braking. Keeping the vehicle in gear maintains control at all times.

Question 50Driving a truck or heavy vehicle safely

A driver notices the steering feels light and the vehicle wanders at speed after loading. Which cause is most likely?

  1. The front axle is lightly loaded and the rear is overloaded Correct answer.
  2. The load is too evenly distributed
  3. The tyres are all at the correct pressure
  4. The engine oil is new

Explanation

If weight is concentrated toward the rear, the front axle can become lightly loaded, reducing steering grip and making the vehicle wander. Load should be distributed to keep adequate weight on the steering axle within axle limits. Light steering is a warning sign to stop and redistribute the load.