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QLD Heavy Vehicle Knowledge Test study materials
QLD Heavy Vehicle Knowledge Test study resources

QLD Heavy Vehicle Knowledge Test practice questions

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Question 1Heavy vehicle licence classes and vehicle categories

Under the Queensland licence framework, a heavy vehicle licence class is determined primarily by which characteristic of the vehicle?

  1. The colour and signage displayed on the vehicle
  2. The number of axles fitted to the vehicle
  3. The gross vehicle mass or gross combination mass of the vehicle Correct answer.
  4. The number of passengers the vehicle is permitted to carry

Explanation

Queensland heavy vehicle classes are set by mass limits: light vehicles sit at or below 4.5 tonnes GVM, medium rigid covers vehicles above that up to 8 tonnes, and heavier classes are defined by GVM and GCM thresholds. Passenger capacity, axle count and appearance do not by themselves change the licence class required.

Question 2Heavy vehicle licence classes and vehicle categories

A driver holds a Queensland medium rigid (MR) licence. Which vehicle may that driver lawfully operate without an additional class?

  1. A prime mover towing a semi-trailer with a GCM of 30 tonnes
  2. A bus with 30 seated passengers and a GVM of 12 tonnes
  3. A three-axle truck with a GVM of 12 tonnes
  4. A two-axle truck with a GVM of 7 tonnes Correct answer.

Explanation

Medium rigid covers vehicles with a GVM greater than 4.5 tonnes and up to 8 tonnes, typically with two axles. Anything above 8 tonnes GVM, or a combination, needs a higher class such as heavy rigid or heavy combination.

Question 3Heavy vehicle licence classes and vehicle categories

Which Queensland licence class is required to drive a prime mover towing a semi-trailer?

  1. Medium rigid
  2. Car licence with a heavy vehicle endorsement
  3. Heavy combination Correct answer.
  4. Heavy rigid

Explanation

Heavy combination (HC) authorises driving a prime mover attached to a semi-trailer, or a heavy rigid vehicle towing a trailer with a combined mass above 9 tonnes. Heavy rigid covers single heavy vehicles only, and no car licence endorsement permits articulated combinations.

Question 4Heavy vehicle licence classes and vehicle categories

What is the maximum GVM of a vehicle that may be driven on a Queensland car (C class) licence?

  1. 4.5 tonnes Correct answer.
  2. 6 tonnes
  3. 12 tonnes
  4. 8 tonnes

Explanation

A car licence in Queensland covers vehicles with a GVM of up to 4.5 tonnes, seating no more than 12 adults including the driver. Vehicles above that mass require a light rigid or heavy vehicle class.

Question 5Heavy vehicle licence classes and vehicle categories

A light rigid (LR) licence in Queensland authorises driving which type of vehicle?

  1. A truck with a GVM between 4.5 and 8 tonnes, or a bus of that mass with more than 12 seats Correct answer.
  2. A prime mover with a semi-trailer attached
  3. Any vehicle with a GVM above 8 tonnes regardless of configuration
  4. A vehicle towing a trailer with a combined mass above 9 tonnes

Explanation

Light rigid covers vehicles from more than 4.5 tonnes up to 8 tonnes GVM, including small trucks and buses seating more than 12 adults. Heavier rigid vehicles and combinations require the corresponding higher class.

Question 6Heavy vehicle licence classes and vehicle categories

Which class of Queensland licence must a driver hold to operate a heavy rigid vehicle that is towing a trailer with a combined mass of 9 tonnes or less?

  1. Heavy combination
  2. Light rigid
  3. Medium rigid
  4. Heavy rigid Correct answer.

Explanation

Heavy rigid (HR) authorises a heavy rigid vehicle and allows towing a trailer with a combined mass of up to 9 tonnes. Once the trailer combination exceeds 9 tonnes, the heavy combination class is required instead.

Question 7Heavy vehicle licence classes and vehicle categories

A bus is designed to carry 40 seated passengers. Which minimum Queensland licence class does the driver normally need?

  1. Car licence only
  2. Light rigid licence only
  3. Heavy rigid or the appropriate heavy bus class, plus a driver authority Correct answer.
  4. Heavy combination licence

Explanation

Buses carrying more than 12 adults require a heavy vehicle class based on the bus mass, and public passenger operations also require a driver authority. A car or light rigid licence alone cannot authorise a large bus.

Question 8Heavy vehicle licence classes and vehicle categories

What does the term GCM (gross combination mass) describe?

  1. The mass carried on the drive axles only
  2. The tare mass of the vehicle with no load
  3. The maximum loaded mass of a motor vehicle plus any trailer it tows Correct answer.
  4. The maximum loaded mass of the towing vehicle alone

Explanation

GCM is the maximum permissible mass of the drawing vehicle together with the trailer or trailers it may tow, as specified by the manufacturer. GVM refers to the motor vehicle alone, and tare mass is the unladen weight.

Question 9Heavy vehicle licence classes and vehicle categories

A vehicle's compliance plate shows a GVM of 4.5 tonnes exactly. Which licence class is the minimum required to drive it?

  1. Heavy rigid licence
  2. Light rigid licence
  3. Car licence Correct answer.
  4. Medium rigid licence

Explanation

The car licence limit includes vehicles of up to and including 4.5 tonnes GVM, so a vehicle at exactly 4.5 tonnes remains within car licence scope. Light rigid begins only above 4.5 tonnes.

Question 10Heavy vehicle licence classes and vehicle categories

Which statement correctly describes the relationship between a heavy rigid licence and a heavy combination licence in Queensland?

  1. Heavy combination is a lower class than heavy rigid
  2. The two classes cover identical vehicles
  3. Heavy rigid automatically authorises all articulated combinations
  4. Heavy combination authorises articulated vehicles and heavy rigid vehicles towing trailers above 9 tonnes Correct answer.

Explanation

Heavy combination is the higher class and covers articulated vehicles plus heavy rigid vehicles towing trailers with a combined mass over 9 tonnes. Heavy rigid alone does not extend to those combinations.

Question 11Heavy vehicle licence classes and vehicle categories

A driver holds an HR licence and wants to tow a trailer behind a heavy rigid truck so the combination totals 14 tonnes. What is required?

  1. Upgrade to a heavy combination licence Correct answer.
  2. Obtain a car licence endorsement
  3. Upgrade to a medium rigid licence
  4. No change, because HR covers any trailer

Explanation

Heavy rigid permits towing a trailer only up to 9 tonnes combined mass. A combination of 14 tonnes exceeds that threshold and requires the heavy combination class.

Question 12Heavy vehicle licence classes and vehicle categories

Which of these vehicles would ordinarily require a heavy rigid licence rather than a medium rigid licence?

  1. A three-axle truck with a GVM of 16 tonnes Correct answer.
  2. A two-axle truck with a GVM of 7 tonnes
  3. A car towing a box trailer
  4. A van with a GVM of 4 tonnes

Explanation

Heavy rigid applies to rigid vehicles with a GVM greater than 8 tonnes, so a 16 tonne truck falls within that class. Medium rigid stops at 8 tonnes, and lighter vehicles remain in car or light rigid scope.

Question 13Heavy vehicle licence classes and vehicle categories

In Queensland, what does an 'R' condition on a heavy vehicle licence most commonly indicate?

  1. The vehicle must display a warning sign
  2. The driver may only drive during daylight hours
  3. The driver must carry a passenger at all times
  4. The licence is restricted to a particular vehicle class or automatic transmission Correct answer.

Explanation

Conditions on a Queensland licence restrict how the licence may be used, such as being limited to automatic transmission or to a specific class. They do not impose curfews or passenger requirements unless separately stated.

Question 14Heavy vehicle licence classes and vehicle categories

A learner wants to progress to a heavy vehicle class in Queensland. Which requirement generally applies before a heavy vehicle licence is issued?

  1. Holding the prerequisite lower class licence for the required period and passing the relevant knowledge and practical assessments Correct answer.
  2. Completing only a medical examination
  3. Paying an additional fee with no testing
  4. Holding an interstate licence for at least ten years

Explanation

Progression through the classes requires holding the prerequisite licence for the prescribed period and passing the knowledge and practical assessments for the new class. A medical may also be needed, but it is not the sole requirement.

Question 15Heavy vehicle licence classes and vehicle categories

Which heavy vehicle category is defined by the vehicle being articulated so that the prime mover and trailer are connected by a turntable?

  1. Rigid truck and dog trailer
  2. Semi-trailer combination Correct answer.
  3. Road train
  4. B-double

Explanation

A semi-trailer is coupled to a prime mover by a turntable, forming an articulated combination. A B-double uses two semi-trailers linked by a fifth wheel on the lead trailer, and road trains involve multiple trailers.

Question 16Heavy vehicle licence classes and vehicle categories

How is a B-double combination structured?

  1. A rigid truck with a trailer attached by a drawbar only
  2. A rigid truck towing two independent dog trailers
  3. A prime mover towing a single semi-trailer
  4. Two semi-trailers coupled so the second rests on a fifth wheel mounted on the first Correct answer.

Explanation

A B-double consists of two semi-trailers where the lead trailer carries a fifth wheel that supports the second trailer. This differs from an A-double, which uses converter dollies and drawbars.

Question 17Heavy vehicle licence classes and vehicle categories

What distinguishes a road train from other heavy combinations?

  1. It has two or more trailers towed behind a prime mover or rigid truck Correct answer.
  2. It is limited to urban deliveries only
  3. It always has a single trailer
  4. It must be a rigid vehicle with no trailer

Explanation

A road train is a heavy combination with two or more trailers, subject to specific access and mass limits. Single-trailer combinations and rigid vehicles without trailers are not road trains.

Question 18Heavy vehicle licence classes and vehicle categories

A prime mover towing a semi-trailer has a GCM of 42 tonnes. Which Queensland licence class is required?

  1. Medium rigid
  2. Heavy combination Correct answer.
  3. Light rigid
  4. Heavy rigid

Explanation

Articulated vehicles of any mass above the heavy rigid threshold fall within heavy combination, and a 42 tonne GCM combination clearly exceeds rigid limits. Heavy rigid covers single vehicles only.

Question 19Heavy vehicle licence classes and vehicle categories

Which of the following best describes a 'rigid' heavy vehicle?

  1. A vehicle whose chassis is a single unit that does not articulate between the cab and load area Correct answer.
  2. A vehicle with a turntable coupling to a semi-trailer
  3. A vehicle that must always tow a dog trailer
  4. A vehicle with two separate load-carrying sections joined by a pivot

Explanation

A rigid vehicle has a single, non-articulating chassis, so the cab and body form one unit. Articulated vehicles pivot at a turntable or coupling point, which is what separates them from rigid designs.

Question 20Heavy vehicle licence classes and vehicle categories

A driver with a car licence wants to drive a small truck with a GVM of 6 tonnes. What is the minimum licence class needed?

  1. Heavy rigid
  2. Medium rigid
  3. Light rigid Correct answer.
  4. Heavy combination

Explanation

A 6 tonne GVM truck exceeds the 4.5 tonne car licence limit but sits within the light rigid range of more than 4.5 up to 8 tonnes. Higher classes are not required until the mass exceeds 8 tonnes.

Question 21Heavy vehicle licence classes and vehicle categories

Which factor determines whether a heavy vehicle is classified as a 'heavy' vehicle for licensing purposes in Queensland?

  1. Its having more than two axles
  2. Its GVM exceeding 4.5 tonnes Correct answer.
  3. Its length exceeding six metres
  4. Its engine capacity exceeding four litres

Explanation

The heavy vehicle threshold is based on mass: anything above 4.5 tonnes GVM falls outside car licence scope. Engine size, length and axle count may affect other rules but not the licence class boundary.

Question 22Heavy vehicle licence classes and vehicle categories

A heavy rigid vehicle has a GVM of 22 tonnes. What is the maximum combined mass of trailer it may tow on a heavy rigid licence?

  1. 14 tonnes
  2. 4.5 tonnes
  3. 9 tonnes Correct answer.
  4. 22 tonnes

Explanation

Heavy rigid permits towing a trailer only where the combined mass does not exceed 9 tonnes. Beyond that, the heavy combination class is required, regardless of the rigid vehicle's own GVM.

Question 23Heavy vehicle licence classes and vehicle categories

Which statement about heavy vehicle licence classes in Queensland is correct?

  1. A higher class licence generally authorises vehicles covered by the classes below it Correct answer.
  2. Each class authorises only its own vehicles and never lower classes
  3. A medium rigid licence authorises articulated combinations
  4. A heavy combination licence cannot be used to drive a heavy rigid vehicle

Explanation

Queensland licences are cumulative: a higher class such as heavy combination also covers the vehicles of the lower classes. This means an HC holder may drive heavy rigid, medium rigid and light rigid vehicles.

Question 24Heavy vehicle licence classes and vehicle categories

A transport operator wants to use a prime mover with two semi-trailers coupled by a fifth wheel. Which licence class and vehicle category apply?

  1. Medium rigid licence for a dog trailer combination
  2. Heavy rigid licence for a rigid truck
  3. Car licence for a light trailer combination
  4. Heavy combination licence for a B-double Correct answer.

Explanation

Two semi-trailers linked by a fifth wheel form a B-double, which is an articulated combination requiring a heavy combination licence. Rigid and medium rigid classes do not extend to multi-trailer articulated configurations.

Question 25Heavy vehicle licence classes and vehicle categories

A driver holds a medium rigid licence and is offered work driving a 10 tonne GVM rigid truck with a dog trailer. What is the correct position?

  1. The driver needs to upgrade, because the truck exceeds the medium rigid mass limit Correct answer.
  2. The driver may proceed because GVM is irrelevant once a trailer is attached
  3. The driver may proceed because a dog trailer reduces the effective mass
  4. The driver may proceed because medium rigid covers any rigid truck

Explanation

Medium rigid is limited to vehicles up to 8 tonnes GVM, so a 10 tonne truck already exceeds that class before any trailer is considered. The driver must upgrade to heavy rigid or higher.

Question 26Heavy vehicle licence classes and vehicle categories

In Queensland, a vehicle with a gross vehicle mass (GVM) of 4.5 tonnes is classified as which category for licensing purposes?

  1. Medium rigid Correct answer.
  2. Car
  3. Light rigid
  4. Heavy rigid

Explanation

Queensland licensing defines a medium rigid vehicle as one with a GVM exceeding 4.5 tonnes but not exceeding 8 tonnes. A vehicle at exactly 4.5 tonnes falls below that threshold and is not medium rigid. It is also above the car threshold, so it is a light rigid vehicle.

Question 27Heavy vehicle licence classes and vehicle categories

Which Queensland licence class is required to drive a prime mover towing a semi-trailer where the combination has a gross combination mass (GCM) of 30 tonnes?

  1. Heavy rigid (HR)
  2. Medium rigid (MR)
  3. Light rigid (LR)
  4. Heavy combination (HC) Correct answer.

Explanation

A prime mover towing a semi-trailer is an articulated combination, which requires a heavy combination (HC) licence. The HC class covers combinations with a GCM over 9 tonnes, including this 30-tonne example. Lower classes such as HR or MR only cover rigid vehicles or rigid towing trailers within mass limits.

Question 28Heavy vehicle licence classes and vehicle categories

A bus is designed to carry 30 seated passengers and has a GVM of 12 tonnes. Which minimum Queensland licence class is required to drive it?

  1. Heavy rigid (HR) Correct answer.
  2. Medium rigid (MR)
  3. Car (C)
  4. Heavy combination (HC)

Explanation

A bus with a GVM over 8 tonnes is a heavy rigid vehicle, so an HR licence is the minimum required. Passenger-carrying vehicles also require the appropriate bus authority, but the licence class itself is determined by GVM and seating. The MR class only applies to buses with a GVM up to 8 tonnes.

Question 29Heavy vehicle licence classes and vehicle categories

Which statement best describes a 'rigid' heavy vehicle in Queensland licensing?

  1. The vehicle is articulated and pivots at a fifth wheel.
  2. The vehicle must have a tandem axle group.
  3. The vehicle is always a prime mover.
  4. The vehicle's chassis is one continuous unit that cannot bend at a pivot point. Correct answer.

Explanation

A rigid vehicle has a single, non-articulated chassis, so the cab and load area are fixed together. Articulated vehicles, such as semi-trailers, pivot at a fifth wheel and are not rigid. The presence of a tandem axle group does not determine whether a vehicle is rigid.

Question 30Heavy vehicle licence classes and vehicle categories

A driver holds a medium rigid (MR) licence and wants to drive a rigid truck with a GVM of 7 tonnes towing a trailer with a GVM of 3 tonnes. What licence class is required?

  1. Heavy combination (HC)
  2. Heavy rigid (HR) Correct answer.
  3. Medium rigid (MR)
  4. Light rigid (LR)

Explanation

When a rigid vehicle tows a trailer, the combined mass determines the class. Here the combination totals 10 tonnes, which exceeds the 9-tonne limit for an MR licence, so an HR licence is required. An HR licence covers rigid vehicles and rigid-plus-trailer combinations above 9 tonnes.

Question 31Heavy vehicle licence classes and vehicle categories

What does the term 'gross combination mass' (GCM) represent for a heavy vehicle?

  1. The maximum loaded mass of the complete combination, including all trailers. Correct answer.
  2. The maximum mass that can be carried on the drive axle.
  3. The maximum loaded mass of the prime mover alone.
  4. The maximum loaded mass of the trailer alone.

Explanation

GCM is the maximum permissible mass of the entire combination-prime mover plus trailer(s) plus load-as specified by the manufacturer. It is used to determine licence class and safe loading limits. Axle mass limits are separate specifications.

Question 32Heavy vehicle licence classes and vehicle categories

Which of these vehicles would ordinarily require a heavy rigid (HR) licence rather than a medium rigid (MR) licence?

  1. A rigid truck with a GVM of 6 tonnes.
  2. A bus with a GVM of 7 tonnes.
  3. A rigid truck with a GVM of 12 tonnes. Correct answer.
  4. A rigid truck with a GVM of 8 tonnes towing a trailer of 2 tonnes.

Explanation

An HR licence is required for rigid vehicles with a GVM over 8 tonnes. A 12-tonne rigid truck therefore needs HR. Vehicles up to 8 tonnes GVM, or combinations up to 9 tonnes, fall within MR.

Question 33Heavy vehicle licence classes and vehicle categories

A learner wants to progress to a heavy vehicle class in Queensland. Which requirement generally applies before a heavy vehicle licence can be issued?

  1. The learner must complete a first aid certificate.
  2. The learner must pass a knowledge test and a practical driving assessment for the heavy vehicle class. Correct answer.
  3. The learner must hold a car licence for at least 12 months.
  4. The learner must be at least 25 years old.

Explanation

To obtain a heavy vehicle licence in Queensland, a learner must pass the relevant knowledge test and a practical driving assessment in the heavy vehicle class. A car licence is a prerequisite, but the specific heavy vehicle requirements centre on these tests. Age and first aid are not standard requirements for the licence class itself.

Question 34Heavy vehicle licence classes and vehicle categories

Which heavy vehicle category is defined by the vehicle being articulated so that the prime mover and trailer are connected by a turntable (fifth wheel)?

  1. Rigid truck
  2. Dog trailer
  3. B-double
  4. Semi-trailer Correct answer.

Explanation

A semi-trailer is an articulated vehicle where the trailer is coupled to the prime mover by a fifth wheel and supported at the rear by its own axles. A B-double is a specific combination of two semi-trailers, but the basic articulated unit is the semi-trailer. Rigid trucks and dog trailers do not use a fifth wheel coupling in this way.

Question 35Heavy vehicle licence classes and vehicle categories

What distinguishes a road train from other heavy combinations in Queensland?

  1. It is a rigid truck towing a single semi-trailer.
  2. It consists of a prime mover towing two or more trailers. Correct answer.
  3. It must operate only on sealed roads.
  4. It is limited to a maximum of two trailers.

Explanation

A road train is a heavy combination consisting of a prime mover towing two or more trailers, often used in remote areas. This multi-trailer configuration distinguishes it from a single semi-trailer or B-double. Road trains may operate on unsealed roads subject to conditions.

Question 36Heavy vehicle licence classes and vehicle categories

A transport operator wants to use a prime mover with two semi-trailers coupled by a fifth wheel. Which licence class and condition are typically required?

  1. Heavy combination (HC) with a B-double condition. Correct answer.
  2. Medium rigid (MR) with a trailer condition.
  3. Car (C) with a heavy vehicle endorsement.
  4. Heavy rigid (HR) with no condition.

Explanation

A prime mover with two semi-trailers is a B-double, which requires a heavy combination (HC) licence. In Queensland, drivers must also hold a B-double condition on that licence. An HR licence does not cover articulated combinations.

Question 37Heavy vehicle licence classes and vehicle categories

A driver holds a medium rigid (MR) licence and is offered work driving a 10-tonne GVM rigid truck with a dog trailer. What is the minimum licence class required?

  1. Heavy rigid (HR) Correct answer.
  2. Light rigid (LR)
  3. Medium rigid (MR)
  4. Heavy combination (HC)

Explanation

A rigid truck towing a dog trailer is a rigid-plus-trailer combination, not an articulated combination. The combined mass here exceeds 9 tonnes, so an HR licence is required. An HC licence is only needed for articulated vehicles such as semi-trailers.

Question 38Heavy vehicle licence classes and vehicle categories

Which statement correctly compares the heavy rigid (HR) and heavy combination (HC) licence classes in Queensland?

  1. An HR licence covers rigid vehicles and rigid-plus-trailer combinations above 9 tonnes, while an HC licence covers articulated combinations. Correct answer.
  2. An HR licence allows driving any articulated vehicle up to 15 tonnes GCM.
  3. An HC licence is a lower class than HR and can be obtained first.
  4. An HC licence allows driving rigid vehicles and articulated combinations.

Explanation

The HR class covers rigid vehicles and rigid-plus-trailer combinations with a combined mass over 9 tonnes. The HC class is specifically for articulated combinations, such as prime movers with semi-trailers. HC is a higher class and requires an HR licence as a prerequisite.

Question 39Heavy vehicle licence classes and vehicle categories

In Queensland, which licence class allows a driver to operate a bus carrying more than 12 seated adults, including a bus towing a trailer?

  1. Heavy rigid (HR) Correct answer.
  2. Heavy combination (HC)
  3. Medium rigid (MR)
  4. Light rigid (LR)

Explanation

The heavy rigid class covers rigid vehicles with a GVM over 8 tonnes as well as buses designed to seat more than 12 adults, and it permits towing a trailer within the prescribed mass limits. A bus carrying many seated passengers therefore falls within the HR class rather than the lighter rigid classes.

Question 40Heavy vehicle licence classes and vehicle categories

A learner is deciding which Queensland licence class suits a vehicle with a GVM of 4.5 tonnes that is not a bus. Which class applies?

  1. Heavy rigid (HR)
  2. Light rigid (LR) Correct answer.
  3. Medium rigid (MR)
  4. Car (C)

Explanation

The light rigid class begins above 4.5 tonnes GVM and extends to 8 tonnes, and also covers buses seating up to 8 adults. A non-bus vehicle at exactly 4.5 tonnes GVM therefore sits within the light rigid category rather than the car class.

Question 41Heavy vehicle road rules and safe driving

In Queensland, what is the maximum blood alcohol concentration permitted for a driver holding a provisional licence?

  1. 0.05
  2. 0.08
  3. 0.00 Correct answer.
  4. 0.02

Explanation

Drivers on a provisional or learner licence must have a zero blood alcohol concentration at all times while driving. This is stricter than the 0.05 limit that applies to fully licensed drivers. Any reading above zero is an offence for a provisional driver.

Question 42Heavy vehicle road rules and safe driving

You are driving a heavy vehicle on a Queensland highway and begin to feel drowsy. What is the safest action?

  1. Increase speed to reach the destination sooner
  2. Open a window and turn up the radio to stay alert
  3. Drink an energy drink and keep driving
  4. Stop at a safe place and rest before continuing Correct answer.

Explanation

Fatigue seriously reduces reaction time and judgement, and is a major factor in heavy vehicle crashes. The only effective remedy is to stop and rest, ideally with a short sleep. Fresh air, loud music and energy drinks do not overcome fatigue.

Question 43Heavy vehicle road rules and safe driving

What is the default maximum speed limit on roads in built-up areas of Queensland unless signs show otherwise?

  1. 70 km/h
  2. 40 km/h
  3. 60 km/h
  4. 50 km/h Correct answer.

Explanation

In Queensland the default speed limit in built-up areas is 50 km/h unless signs indicate a different limit. Drivers must always obey posted signs where they exist. Driving at the default limit is still an offence if conditions require a slower speed.

Question 44Heavy vehicle road rules and safe driving

When must you use your indicators when changing lanes in a heavy vehicle?

  1. Only when a sign requires it
  2. Always, before moving into the new lane Correct answer.
  3. Never, if the lane is clear
  4. Only when another vehicle is close behind you

Explanation

You must indicate before changing lanes regardless of whether other traffic is visible. Indicators warn other road users of your intention and give them time to respond. Failing to indicate is an offence and increases collision risk.

Question 45Heavy vehicle road rules and safe driving

What does a solid white line along the left edge of the carriageway generally mark?

  1. The centre of a two-way road
  2. A place where you may stop at any time
  3. A lane reserved for overtaking
  4. The edge of the road and the start of the shoulder Correct answer.

Explanation

An edge line marks the boundary of the traffic lane and separates it from the shoulder or roadside. Crossing it is permitted only when necessary, such as to avoid an obstruction. It is not a parking or stopping zone.

Question 46Heavy vehicle road rules and safe driving

A heavy vehicle must stop at a level crossing with flashing red lights. When may it proceed?

  1. After waiting 30 seconds regardless of the lights
  2. When the train has passed the crossing
  3. When the lights stop flashing and the way is clear Correct answer.
  4. When the boom gate begins to rise

Explanation

Flashing red lights mean you must stop and remain stopped until the lights stop flashing and the crossing is clear. A train passing does not guarantee a second train is not approaching. Proceeding early risks a serious collision.

Question 47Heavy vehicle road rules and safe driving

How should a driver secure a load on a heavy vehicle?

  1. Ask a passenger to watch the load while driving
  2. Rely on the load's own weight to keep it in place
  3. Use restraints that meet the load restraint requirements Correct answer.
  4. Tie it with any rope available

Explanation

Loads must be restrained so they cannot move or fall, using equipment and methods that meet the load restraint standards. The driver is responsible for ensuring the load is secure before and during the journey. Inadequate restraint can cause serious crashes.

Question 48Heavy vehicle road rules and safe driving

What is the minimum safe following distance in good conditions for a heavy vehicle travelling at 100 km/h?

  1. Half a second behind the vehicle ahead
  2. Exactly 20 metres
  3. At least a two-second gap, increased for heavy vehicles Correct answer.
  4. One car length per 10 km/h

Explanation

A minimum two-second gap applies in good conditions, and heavy vehicles should allow more because of their greater stopping distance. The gap should increase in rain, darkness or poor visibility. Following too closely leaves no time to react.

Question 49Heavy vehicle road rules and safe driving

You are driving a truck and approach a roundabout. What is the correct procedure?

  1. Enter without slowing if no vehicle is visible
  2. Give way to vehicles already in the roundabout Correct answer.
  3. Sound your horn before entering
  4. Stop completely at every entry

Explanation

At a roundabout you must give way to vehicles already circulating in the roundabout. Slow down and be prepared to stop before entering. Once in the roundabout, indicate to leave at the appropriate exit.

Question 50Heavy vehicle road rules and safe driving

A heavy vehicle is involved in a crash where someone is injured. What must the driver do first?

  1. Move the vehicle away before helping
  2. Stop, render assistance and call emergency services Correct answer.
  3. Exchange details only if the other driver asks
  4. Leave and report the crash the next day

Explanation

After a crash involving injury, the driver must stop, provide reasonable assistance and ensure emergency services are called. Details must be exchanged with other parties. Failing to stop is a serious offence.