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NZ WoF Inspector study materials
NZ WoF Inspector study resources

NZ WoF Inspector practice questions

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Question 1Vehicle inspection and certification (WoF/CoF)

Under the New Zealand WoF regime, what is the maximum interval between warrant of fitness inspections for a private light vehicle first registered less than four years ago?

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

Explanation

Vehicles first registered in New Zealand when new and less than four years old are inspected annually, but the initial inspection cycle for a new vehicle begins with a longer gap before the first WoF. The standard recurring WoF interval for a private light vehicle is then 12 months once it reaches the annual cycle.

Question 2Vehicle inspection and certification (WoF/CoF)

During a WoF inspection, an inspector finds a tyre with a tread depth of 1.2 mm in a principal groove across the central three-quarters of the tread. What is the correct outcome?

  1. Fail, because the minimum is 1.5 mm Correct answer.
  2. Pass, provided the tyre is not showing cord
  3. Fail only if the tyre is on a driven axle
  4. Pass, because the minimum is 1.0 mm

Explanation

The legal minimum tread depth for passenger car tyres in New Zealand is 1.5 mm, measured in a principal groove across the central three-quarters of the tread width. A reading of 1.2 mm falls below that threshold and the vehicle cannot be issued a WoF.

Question 3Vehicle inspection and certification (WoF/CoF)

An inspector is checking a vehicle's seat belts. Which condition is a legitimate reason to reject the vehicle?

  1. The belt retracts slowly but locks under firm pull
  2. The belt buckle is a different colour from the webbing
  3. The belt webbing has a frayed section exposing the core Correct answer.
  4. The belt has a manufacturer's label stitched to it

Explanation

Seat belt webbing that is cut, frayed, or has exposed core material cannot safely restrain an occupant and is a rejectable defect. Slow retraction that still locks correctly is generally acceptable.

Question 4Vehicle inspection and certification (WoF/CoF)

Which document must an inspector check to confirm a vehicle's registered gross vehicle mass for a certificate of fitness inspection?

  1. The owner's driver licence
  2. The manufacturer's service schedule
  3. The vehicle register entry or manufacturer's mass rating plate Correct answer.
  4. The vehicle's last fuel receipt

Explanation

Gross vehicle mass is established from the vehicle register or the manufacturer's rating plate fitted to the vehicle. This determines the weight class and the applicable inspection requirements.

Question 5Vehicle inspection and certification (WoF/CoF)

A light vehicle presents with a brake pedal that sinks slowly to the floor when held under steady pressure. What does this most likely indicate and how should the inspector treat it?

  1. An ABS self-test; pass
  2. A hydraulic leak or internal master cylinder fault; reject Correct answer.
  3. Normal brake fade; pass with an advisory
  4. Low tyre pressure; pass with advisory

Explanation

A pedal that continues to sink under constant pressure indicates a loss of hydraulic integrity, such as a leaking wheel cylinder or a failed master cylinder seal. This is a serious safety defect and the vehicle must be rejected.

Question 6Vehicle inspection and certification (WoF/CoF)

What is the primary purpose of the warrant of fitness inspection in New Zealand?

  1. To transfer ownership of the vehicle
  2. To certify the vehicle's market value
  3. To assess the driver's fitness to operate the vehicle
  4. To confirm the vehicle meets minimum safety and, where relevant, emissions standards at the time of inspection Correct answer.

Explanation

A WoF confirms that a vehicle meets specified safety requirements, and for relevant vehicles emissions requirements, at the time of inspection. It is a point-in-time check, not an ongoing guarantee of condition.

Question 7Vehicle inspection and certification (WoF/CoF)

An inspector notices the windscreen has a chip in the driver's primary forward vision area. What is the appropriate action?

  1. Pass if the chip is smaller than 20 mm anywhere on the glass
  2. Reject only if the glass is cracked through both layers
  3. Reject, because damage in the critical vision area impairs the driver's view Correct answer.
  4. Pass, because chips are cosmetic

Explanation

Damage located in the driver's critical vision area can distort or obscure vision and is a rejectable defect. Damage elsewhere may be assessed against size and position criteria, but the primary vision area is treated strictly.

Question 8Vehicle inspection and certification (WoF/CoF)

Which of the following is an inspector required to do when a vehicle fails a WoF inspection?

  1. Destroy the previous WoF label
  2. Issue a written record of the failed items to the operator Correct answer.
  3. Retain the vehicle's registration plates
  4. Notify the police immediately

Explanation

When a vehicle fails, the inspector must provide the operator with a record identifying the failed items so repairs can be made and verified. The inspector does not seize plates or labels.

Question 9Vehicle inspection and certification (WoF/CoF)

A vehicle presents with excessive free play at the steering wheel rim before the road wheels begin to move. Which system should the inspector investigate?

  1. The suspension bump stops
  2. The exhaust mounting system
  3. The steering box, rack, or column joints Correct answer.
  4. The fuel filler cap seal

Explanation

Free play at the rim indicates wear in the steering box or rack, column joints, or tie rod ends. Excessive play reduces steering precision and is a rejectable defect.

Question 10Vehicle inspection and certification (WoF/CoF)

An inspector is assessing a vehicle's lighting. The high stop lamp (third brake light) fitted by the manufacturer is not illuminating when the brakes are applied. How should this be treated?

  1. Pass, because it is an optional accessory
  2. Pass if the two main stop lamps work
  3. Reject, because a fitted stop lamp must function Correct answer.
  4. Reject only if the vehicle is a commercial vehicle

Explanation

Where a high stop lamp is fitted as original equipment, it forms part of the stop lamp system and must operate correctly. A non-functioning fitted stop lamp is a rejectable defect.

Question 11Vehicle inspection and certification (WoF/CoF)

During a CoF inspection of a heavy vehicle, the inspector finds the air brake system loses pressure audibly when the engine is switched off. What is the correct interpretation?

  1. There is an air leak that must be rectified before certification Correct answer.
  2. The system is functioning within tolerance
  3. The compressor is overcharging the system
  4. This is normal air dryer purging

Explanation

An audible pressure loss with the engine off indicates a leak in the air brake system, which compromises braking performance. The leak must be located and repaired before a CoF can be issued.

Question 12Vehicle inspection and certification (WoF/CoF)

What does the term 'LVV' refer to in the New Zealand vehicle certification system?

  1. Light Vehicle Validation for imported cars
  2. Low Volume Vehicle certification for modified or scratch-built vehicles Correct answer.
  3. Licensed Vehicle Vendor registration
  4. Large Vehicle Verification for heavy trucks

Explanation

LVV stands for Low Volume Vehicle certification, which applies to modified vehicles and scratch-built vehicles that fall outside standard mass-production approval. It is administered separately from the WoF/CoF inspection.

Question 13Vehicle inspection and certification (WoF/CoF)

An inspector is examining a vehicle's suspension and observes a shock absorber with visible oil weeping down the body. How should this be assessed?

  1. Reject only if the spring is also broken
  2. Pass if the vehicle rides smoothly
  3. Reject, because fluid loss indicates the damper is failing Correct answer.
  4. Pass, because minor weeping is always acceptable

Explanation

Visible fluid loss from a shock absorber indicates seal failure and deteriorating damping performance, which affects stability and grip. This is treated as a rejectable defect.

Question 14Vehicle inspection and certification (WoF/CoF)

A vehicle's odometer reading is recorded during a WoF inspection. Why is this record important?

  1. It confirms the vehicle's emission standard
  2. It determines the WoF fee payable
  3. It sets the next inspection interval
  4. It supports odometer integrity and helps detect tampering Correct answer.

Explanation

Recording the odometer at each inspection builds a history that helps detect odometer tampering or inconsistencies. It does not set fees or inspection intervals.

Question 15Vehicle inspection and certification (WoF/CoF)

An inspector finds a vehicle with a fuel leak dripping onto the exhaust manifold. What is the correct action?

  1. Pass because the leak is small
  2. Defer the decision to the vehicle owner
  3. Reject the vehicle as a fire hazard Correct answer.
  4. Issue a WoF with an advisory note

Explanation

A fuel leak near a hot exhaust component creates a serious fire risk and must be rejected. The defect must be repaired before certification.

Question 16Vehicle inspection and certification (WoF/CoF)

Which of these best describes the difference between a WoF and a CoF in New Zealand?

  1. A WoF is issued by police and a CoF by insurers
  2. A WoF covers emissions only and a CoF covers safety only
  3. A WoF applies to light vehicles while a CoF applies to heavy vehicles and certain other vehicles in commercial service Correct answer.
  4. A WoF is issued annually and a CoF is issued only once

Explanation

The WoF is the routine safety inspection for light vehicles, while the CoF applies to heavy vehicles and certain vehicles used in commercial service, with generally stricter and more frequent requirements. Both are issued by authorised inspection providers.

Question 17Vehicle inspection and certification (WoF/CoF)

An inspector is checking a vehicle's exhaust system and finds the system is louder than the manufacturer's specification with a modified muffler. What is the appropriate assessment?

  1. Reject only if the exhaust leaks
  2. Pass if the vehicle has a current LVV certificate for the exhaust
  3. Pass, since noise is not part of the WoF
  4. Reject, because the exhaust noise exceeds the permitted level Correct answer.

Explanation

Exhaust noise must not exceed the permitted level, and a modified muffler that makes the system louder than specification is a rejectable defect unless covered by appropriate certification. Noise is part of the inspection.

Question 18Vehicle inspection and certification (WoF/CoF)

During a CoF inspection of a vehicle with a load anchorage system, what should the inspector verify?

  1. That the anchorages are painted in a contrasting colour
  2. That the anchorages are made of aluminium
  3. That anchorages and their mountings are secure and free from cracks or excessive corrosion Correct answer.
  4. That the vehicle has at least ten anchorages

Explanation

Load anchorages and their mountings must be structurally sound, secure, and free from cracks or excessive corrosion to safely restrain loads. Colour, material, and a fixed count are not the criteria.

Question 19Vehicle inspection and certification (WoF/CoF)

An inspector observes that a vehicle's tyres are mismatched in size across an axle. How should this be treated?

  1. Pass if all tyres have adequate tread
  2. Reject, because mismatched tyre sizes can adversely affect handling and braking Correct answer.
  3. Pass, because mismatched sizes are permitted
  4. Reject only if the vehicle is four-wheel drive

Explanation

Tyres of different sizes across an axle can cause uneven braking and handling characteristics and are not permitted. Adequate tread does not compensate for the mismatch.

Question 20Vehicle inspection and certification (WoF/CoF)

A vehicle inspector is assessing a light vehicle's suspension and finds a broken coil spring on the front strut. What is the correct outcome?

  1. Pass if the vehicle drives straight
  2. Pass with an advisory to repair soon
  3. Reject only if both front springs are broken
  4. Reject, because a broken spring compromises suspension integrity Correct answer.

Explanation

A broken coil spring compromises suspension integrity and can affect steering and stability, so the vehicle must be rejected. A single broken spring is sufficient grounds.

Question 21Vehicle inspection and certification (WoF/CoF)

An inspector is evaluating a vehicle's brake test results on a roller brake tester. The service brake efficiency is 45 percent. What is the correct interpretation for a light vehicle?

  1. The result is acceptable if the parking brake works
  2. This exceeds the minimum requirement
  3. Brake efficiency is not measured on a roller tester
  4. This is below the minimum requirement and the vehicle should be rejected Correct answer.

Explanation

Light vehicles must achieve a minimum service brake efficiency, and 45 percent falls below the required threshold. The vehicle should be rejected and the braking system repaired.

Question 22Vehicle inspection and certification (WoF/CoF)

An inspector is assessing a vehicle's structural integrity after noting a repair weld on a load-bearing chassis member. What is the key consideration?

  1. Whether the repair is structurally sound and performed to an acceptable standard Correct answer.
  2. Whether the weld is painted over
  3. Whether the vehicle has a tow bar
  4. Whether the weld was done by the owner

Explanation

Repairs to load-bearing structural members must be structurally sound and carried out to an acceptable standard to preserve crashworthiness and strength. Cosmetic appearance and who performed the work are not the deciding factors.

Question 23Vehicle inspection and certification (WoF/CoF)

A heavy vehicle presents for CoF with a brake system that has been modified by fitting a different type of brake chamber. What is the inspector's correct approach?

  1. Reject automatically because any modification is prohibited
  2. Ignore the modification because it is a brake component
  3. Require evidence that the modification is certified and appropriate for the vehicle Correct answer.
  4. Accept the modification if the brakes work

Explanation

Modifications affecting braking performance must be appropriately certified and compatible with the vehicle's design. The inspector should require evidence of certification rather than accepting or rejecting the change without assessment.

Question 24Vehicle inspection and certification (WoF/CoF)

An inspector is checking a vehicle's lighting and finds the headlamps are aimed too high, dazzling oncoming traffic. What is the correct action?

  1. Reject, because incorrect headlamp aim is a defect Correct answer.
  2. Pass if the headlamps are new
  3. Reject only if the headlamps are also dim
  4. Pass, because aim is adjusted by the driver

Explanation

Headlamps must be correctly aimed to avoid dazzling other road users, and incorrect aim is a rejectable defect. The vehicle should be failed and the aim corrected.

Question 25Vehicle inspection and certification (WoF/CoF)

A vehicle inspector is reviewing a vehicle's documentation and finds the registered colour differs from the actual colour. What is the appropriate action?

  1. Reject the vehicle immediately for a colour mismatch
  2. Change the register entry personally
  3. Record the discrepancy and advise the operator to correct the register Correct answer.
  4. Ignore it, as colour is not part of inspection

Explanation

A colour discrepancy is a registration record issue rather than a safety defect, so the inspector records it and advises the operator to correct the register. The inspector does not alter register entries.

Question 26Vehicle inspection and certification (WoF/CoF)

During a WoF inspection, an inspector checks the seatbelt webbing and finds a small section where the fibres are frayed and the belt edge is cut through. What is the correct outcome for this component?

  1. The seatbelt must be failed because the webbing is cut and frayed Correct answer.
  2. The seatbelt passes if the cut is shorter than 25 mm
  3. The seatbelt passes if the buckle still latches securely
  4. The seatbelt passes because the damage is confined to the edge

Explanation

Seatbelt webbing that is cut, frayed, or shows exposed load-bearing fibres is structurally compromised and cannot be relied on to restrain an occupant in a crash. The condition of the buckle or the length of the cut does not restore the strength of the damaged webbing, so the component must be rejected.

Question 27Vehicle inspection and certification (WoF/CoF)

An inspector is checking a light vehicle's brake fluid reservoir and finds the fluid level is below the minimum mark, with no visible external leak. Which action best reflects correct inspection practice?

  1. Advise the owner to monitor the level until the next inspection
  2. Record a defect and require the fault to be rectified before a pass is issued Correct answer.
  3. Top up the fluid and pass the vehicle on the spot
  4. Pass the vehicle because the brakes still operate

Explanation

A brake fluid level below minimum indicates a fault or loss of fluid that may affect braking performance, and the inspector's role is to identify and record defects rather than repair them. Issuing a pass or merely advising monitoring would leave a safety-related defect uncorrected.

Question 28Vehicle inspection and certification (WoF/CoF)

Which document authorises a vehicle to be operated on the road and shows the date by which the next inspection must be completed?

  1. The vehicle's odometer record
  2. The warrant of fitness or certificate of fitness label Correct answer.
  3. The certificate of registration
  4. The driver licence

Explanation

The WoF or CoF label is the inspection document that certifies the vehicle met the required standard on the inspection date and states the expiry date. Registration and driver licensing are separate legal requirements that do not certify the vehicle's condition.

Question 29Vehicle inspection and certification (WoF/CoF)

An inspector is checking a vehicle's tyres and finds the tread depth on one tyre is 1.2 mm across the central three-quarters of the tread width. How should the inspector treat this tyre?

  1. Pass it, because the tread is above 1.0 mm
  2. Fail it, because the minimum legal tread depth is 1.5 mm Correct answer.
  3. Pass it if the tyre is on a non-driven axle
  4. Fail it only if the tyre also has sidewall damage

Explanation

The minimum legal tread depth for light vehicle tyres in New Zealand is 1.5 mm, measured across the central three-quarters of the tread width. A reading of 1.2 mm is below that threshold and the tyre must be rejected regardless of axle position or other damage.

Question 30Vehicle inspection and certification (WoF/CoF)

During an inspection, an inspector notices the vehicle's horn fails to sound when the button is pressed. How should this be recorded?

  1. As a pass, because the horn is not part of the safety system
  2. As a defect only if the vehicle is a commercial vehicle
  3. As a pass, because horns are optional equipment
  4. As a defect, because a functioning horn is a required item Correct answer.

Explanation

A functioning horn is a required inspection item for vehicles required to be fitted with one, as it is a warning device for other road users. Failure to sound is therefore a defect that must be recorded.

Question 31Vehicle inspection and certification (WoF/CoF)

An inspector is checking a vehicle's mirrors and finds the interior rear-view mirror is missing, but both exterior mirrors are present and correctly adjusted. What is the correct assessment?

  1. Pass the vehicle, because adequate rearward vision is provided by the exterior mirrors Correct answer.
  2. Fail the vehicle, because the interior mirror is a legal requirement on all vehicles
  3. Fail the vehicle, because all three mirrors must be present
  4. Pass only if the vehicle is a van or ute

Explanation

The inspection standard requires adequate rearward vision, and where exterior mirrors provide that vision the absence of an interior mirror is acceptable. The requirement is about the driver's ability to see behind, not a fixed count of mirrors on every vehicle.

Question 32Vehicle inspection and certification (WoF/CoF)

Which of the following best describes the role of an inspecting organisation under the New Zealand vehicle inspection system?

  1. It manufactures replacement parts for the vehicles it inspects
  2. It is approved to carry out inspections and issue WoF or CoF documents Correct answer.
  3. It issues driver licences to the vehicle's operators
  4. It sets the legal speed limits for the vehicles it inspects

Explanation

Inspecting organisations are approved by the transport authority to perform inspections and issue WoF or CoF documents on its behalf. They do not set road rules, manufacture parts, or issue driver licences.

Question 33Vehicle inspection and certification (WoF/CoF)

An inspector observes that the vehicle's windscreen washers do not spray water, although the wipers operate correctly. How should this be treated?

  1. As a defect only if the washer reservoir is empty
  2. As a pass, because the wipers are the primary clearing device
  3. As a pass, because washers are only needed in winter
  4. As a defect, because the washers are a required inspection item Correct answer.

Explanation

Windscreen washers are a required inspection item because they allow the driver to clear the screen when it is obscured by dirt or spray. Non-operation is a defect regardless of wiper function or season.

Question 34Vehicle inspection and certification (WoF/CoF)

An inspector is assessing a vehicle with a significant dent in the front guard that has exposed bare metal but does not affect any lamp, wheel, or structural component. How should this be treated?

  1. Pass it only if the owner signs a waiver
  2. Pass it, because the damage does not affect a safety item Correct answer.
  3. Fail it, because any body damage is a defect
  4. Fail it, because exposed metal always indicates structural rust

Explanation

Cosmetic body damage that does not affect safety items such as lamps, wheels, structure, or occupant protection is not a reason to fail an inspection. The inspector must consider whether the damage compromises a required item rather than the appearance of the panel.

Question 35Vehicle inspection and certification (WoF/CoF)

An inspector is checking a vehicle's door latches and finds the driver's door latch does not hold the door closed securely. Why is this treated as a safety defect?

  1. Because an unlatched door increases wind noise
  2. Because it affects the vehicle's fuel consumption
  3. Because it prevents the central locking from operating
  4. Because the door may open during a crash or while driving, endangering occupants Correct answer.

Explanation

Door latches are part of the occupant protection system and must hold the door closed securely so it does not open in normal driving or in a crash. Noise, fuel use, and central locking are not the safety basis for the requirement.

Question 36Vehicle inspection and certification (WoF/CoF)

An inspector is examining a vehicle's steering and finds the power steering belt is missing, making steering much heavier at low speed. How should this be assessed?

  1. Fail only if the vehicle is a heavy commercial vehicle
  2. Pass, because power steering is optional equipment
  3. Fail, because a required steering component is not functioning Correct answer.
  4. Pass, because the steering still works mechanically

Explanation

Where a vehicle is fitted with power steering, the system must function as designed; a missing belt means an original safety-related system is inoperative. The heavier steering effort at low speed is a direct consequence and constitutes a defect.

Question 37Vehicle inspection and certification (WoF/CoF)

During an inspection, an inspector finds the vehicle's registration plate is obscured by a tow bar mounted bike rack that covers the rear plate. What is the correct action?

  1. Pass, because the rack is a temporary accessory
  2. Pass, because the front plate remains visible
  3. Record a defect, because the plate must be clearly legible Correct answer.
  4. Record a defect only if the rack is permanently fixed

Explanation

Registration plates must be clearly legible from the required viewing position, and a rack that obscures the rear plate prevents this. Whether the accessory is temporary or permanent does not change the requirement for the plate to be visible.

Question 38Vehicle inspection and certification (WoF/CoF)

An inspector is testing a vehicle's service brakes and finds the brake pedal slowly sinks toward the floor when held under steady pressure. What does this most likely indicate?

  1. Correctly adjusted rear brake shoes
  2. A hydraulic leak or internal master cylinder fault Correct answer.
  3. An acceptable amount of pedal free play
  4. Normal operation of the brake booster

Explanation

A pedal that continues to sink under steady pressure indicates the hydraulic system is losing pressure, typically through an external leak or an internal master cylinder fault. A healthy system holds firm under sustained pressure.

Question 39Vehicle inspection and certification (WoF/CoF)

An inspector observes that a light vehicle has been fitted with a body kit that lowers the front bumper to within 80 mm of the ground. What is the main concern the inspector should assess?

  1. The effect on the vehicle's top speed
  2. The risk of the bodywork contacting the road or obstacles Correct answer.
  3. The resale value of the vehicle
  4. The colour match of the body kit

Explanation

Ground clearance affects whether the vehicle can be operated safely without the bodywork striking the road surface or obstacles, and excessively low bodywork may also affect lighting and structural items. The inspector assesses the safety consequence, not appearance or performance claims.

Question 40Vehicle inspection and certification (WoF/CoF)

An inspector is checking a vehicle's fuel system and finds the fuel filler cap is missing. How should this be treated?

  1. Pass, because the cap is not part of the fuel system
  2. Fail only if fuel is visibly leaking
  3. Pass, because the vehicle is petrol rather than diesel
  4. Fail, because a missing cap allows fuel vapour and spillage Correct answer.

Explanation

A fuel filler cap prevents fuel spillage and vapour release and is a required component of the fuel system. Its absence is a defect regardless of fuel type or whether a leak is currently visible.

Question 41Vehicle inspection and certification (WoF/CoF)

An inspector is assessing a vehicle's suspension and finds a lower ball joint with excessive vertical movement when the wheel is loaded and rocked. What is the correct assessment?

  1. Fail, because excessive ball joint play indicates the joint is worn Correct answer.
  2. Fail only if the joint is also noisy
  3. Pass, because the joint is not a structural component
  4. Pass, because some ball joint movement is normal

Explanation

Ball joints locate the suspension and steering and must be free of excessive play; worn joints can separate and cause loss of control. Excessive movement in a loaded joint is a defect regardless of noise.

Question 42Vehicle inspection and certification (WoF/CoF)

An inspector is checking a vehicle's lighting and finds a rear direction indicator lamp that flashes at a noticeably faster rate than the other side. What is the most likely cause and correct treatment?

  1. A dirty lens; pass the vehicle
  2. A weak battery; pass the vehicle
  3. A faulty or incorrect-wattage bulb in the circuit; record a defect Correct answer.
  4. Normal operation; pass the vehicle

Explanation

A direction indicator flashing faster than normal usually signals a bulb of incorrect wattage or a faulty lamp in the circuit, meaning the indicator is not operating as designed. The inspector records the defect rather than treating the flash rate as acceptable.

Question 43Vehicle inspection and certification (WoF/CoF)

An inspector is checking a vehicle's exhaust and finds the system has been modified with a straight-through pipe that increases noise significantly above the original level. How should this be treated?

  1. Pass, because the modification improves performance
  2. Pass, because exhaust noise is not an inspection item
  3. Fail only if the vehicle is a commercial vehicle
  4. Fail, because the exhaust is louder than the manufacturer's specification Correct answer.

Explanation

The exhaust system must not be louder than the manufacturer's specification, and modifications that increase noise beyond that level are a defect. Performance claims do not override the noise requirement.

Question 44Vehicle inspection and certification (WoF/CoF)

An inspector is reviewing a heavy vehicle's load anchorage points and finds a rated tie-down rail with a cracked weld at its mounting bracket. What is the correct action?

  1. Pass, because the crack is small
  2. Fail only if the vehicle is carrying a load at the time
  3. Pass, because the rail is still attached
  4. Fail, because the anchorage is no longer able to withstand rated loads Correct answer.

Explanation

Load anchorage systems must be able to withstand the rated loads for which they are designed, and a cracked weld at a mounting bracket compromises that capacity. The defect exists regardless of whether a load is currently carried.

Question 45Vehicle inspection and certification (WoF/CoF)

An inspector is checking a vehicle's tyres and finds one tyre is inflated to 150 kPa while the manufacturer specifies 220 kPa for that position. What is the correct assessment?

  1. Fail only if the tyre is visibly flat
  2. Pass, because pressure is the owner's responsibility
  3. Fail, because the tyre is significantly under-inflated Correct answer.
  4. Pass, because the tyre is still inflated

Explanation

Tyres must be inflated to the manufacturer's specified pressure for the load and position, and a significant under-inflation is a defect that affects handling, braking, and tyre integrity. The inspector assesses actual pressure against specification rather than waiting for a visibly flat tyre.

Question 46Vehicle inspection and certification (WoF/CoF)

An inspector is examining a vehicle's chassis and finds a section that has been repaired with a patch plate bolted over a cracked rail rather than welded by a certified welder. What is the correct assessment?

  1. Pass, because the crack is covered
  2. Fail, because the repair does not restore structural integrity to the required standard Correct answer.
  3. Pass, because bolted repairs are always acceptable
  4. Fail only if the crack is longer than 100 mm

Explanation

Structural repairs to load-bearing chassis members must restore the original strength and be carried out to an approved standard, typically by a certified welder. A bolted patch over a crack does not restore structural integrity and is a defect regardless of crack length.

Question 47Vehicle inspection and certification (WoF/CoF)

An inspector is assessing a vehicle's brake performance on a roller brake tester and finds one front wheel contributes significantly less braking force than the other. What is the primary safety concern?

  1. Uneven braking that can cause the vehicle to pull or swerve during braking Correct answer.
  2. Faster wear of the brake pedal
  3. Increased tyre wear on the stronger side
  4. Reduced fuel efficiency

Explanation

A significant imbalance in braking force between wheels on the same axle can cause the vehicle to pull or swerve under braking, particularly in an emergency. The inspector assesses balance as a safety criterion alongside overall efficiency.

Question 48Vehicle inspection and certification (WoF/CoF)

An inspector is checking a heavy vehicle's air brake system and finds the low-pressure warning device does not activate when system pressure falls below the specified threshold. Why is this a defect?

  1. Because it increases air compressor wear
  2. Because it changes the colour of the dashboard warning lamp
  3. Because it affects the vehicle's fuel consumption
  4. Because the driver would not be warned before braking performance is compromised Correct answer.

Explanation

The low-pressure warning alerts the driver that air pressure has fallen to a level where braking performance may be compromised, allowing them to stop safely. Without the warning, the driver could continue driving with insufficient brake application force.

Question 49Vehicle inspection and certification (WoF/CoF)

An inspector is assessing a light vehicle that has been converted from right-hand drive to left-hand drive, including a modified steering column and relocated pedals. What is the key requirement the inspector must confirm?

  1. That the vehicle's paint colour has been updated
  2. That the conversion was completed by the vehicle owner
  3. That the vehicle has been re-registered in a new name
  4. That the modified systems meet approved standards and the vehicle has appropriate certification Correct answer.

Explanation

Significant modifications such as steering and pedal relocation affect safety systems and require certification confirming the work meets approved standards. The inspector confirms the certification exists rather than relying on who performed the work or unrelated details.

Question 50Vehicle inspection and certification (WoF/CoF)

An inspector is examining a vehicle's electrical system and finds the battery is not securely fastened and can move within its tray. Why is this treated as a defect?

  1. Because the battery tray will rust faster
  2. Because it affects the radio reception
  3. Because a loose battery can short against bodywork or become dislodged Correct answer.
  4. Because movement increases battery charging efficiency

Explanation

A battery must be securely mounted so it cannot contact bodywork or become dislodged, either of which can cause short circuits, fire risk, or loss of electrical power while driving. The requirement is about securing the battery, not about charging or corrosion.