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CVRT Tester practice questions

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Question 1Commercial Vehicle Roadworthiness Testing (CVRT)

Under the CVRT framework, which vehicles are generally required to undergo a roadworthiness test once they reach the relevant age threshold?

  1. Motorcycles under 50cc
  2. Goods vehicles over 3,500 kg design gross vehicle weight Correct answer.
  3. All passenger cars regardless of age
  4. Agricultural tractors used only on private land

Explanation

CVRT applies to commercial vehicles such as goods vehicles above 3,500 kg DGVW, along with buses and large passenger vehicles. Private cars are covered by a separate car test, and vehicles confined to private land fall outside public road testing rules.

Question 2Commercial Vehicle Roadworthiness Testing (CVRT)

What is the primary purpose of the CVRT annual test?

  1. To assess the driver's competence and licence category
  2. To confirm the vehicle meets minimum roadworthiness and safety standards Correct answer.
  3. To verify the vehicle's resale market value
  4. To set the vehicle's annual motor tax rate

Explanation

The roadworthiness test checks that a vehicle satisfies minimum safety and environmental standards for use on public roads. It does not evaluate driver ability, tax classification, or commercial value.

Question 3Commercial Vehicle Roadworthiness Testing (CVRT)

During a CVRT inspection, the tester is checking the braking system. Which item should be assessed as part of the service brake performance check?

  1. The presence of a spare wheel
  2. The efficiency and balance of braking effort across the axle Correct answer.
  3. The brand of brake fluid used
  4. The colour of the brake calipers

Explanation

Service brake assessment focuses on braking efficiency, balance between wheels, and overall performance relative to vehicle weight. Cosmetic details, fluid branding, and spare wheel presence are not measures of brake performance.

Question 4Commercial Vehicle Roadworthiness Testing (CVRT)

A tester observes that a tyre on a tested commercial vehicle has a tread depth below the legal minimum across the central band. What is the correct outcome?

  1. Advisory only, because tread depth is not a test item
  2. Pass, if the vehicle is under 3,500 kg
  3. Fail, as the tyre does not meet the legal tread requirement Correct answer.
  4. Pass, provided the tyre holds pressure

Explanation

Tyres must meet statutory minimum tread depth across the specified tread band to pass the test. A tyre below that minimum is a defect that results in failure. Pressure retention or vehicle weight class does not override the tread requirement.

Question 5Commercial Vehicle Roadworthiness Testing (CVRT)

Which lighting defect on a commercial vehicle would normally lead to a test failure rather than an advisory?

  1. A non-functioning mandatory rear stop lamp Correct answer.
  2. Minor condensation inside a headlamp lens
  3. A slightly faded reflector on a trailer
  4. A small scratch on a lamp housing

Explanation

Mandatory lamps such as stop lamps must function correctly; a non-working stop lamp is a safety defect and fails the test. Faded reflectors, minor condensation, and cosmetic scratches are typically advisory or not recorded as failures.

Question 6Commercial Vehicle Roadworthiness Testing (CVRT)

When inspecting the steering system, which condition should the tester treat as a serious defect?

  1. Power steering fluid at the correct level
  2. A steering wheel cover fitted by the owner
  3. A slightly worn but secure steering wheel grip
  4. Excessive free play at the steering wheel beyond the permitted limit Correct answer.

Explanation

Excessive steering free play indicates wear or maladjustment that compromises control and is a fail-level defect. Accessories, correct fluid levels, and secure grips do not constitute defects.

Question 7Commercial Vehicle Roadworthiness Testing (CVRT)

What does the term 'design gross vehicle weight' (DGVW) represent in the context of CVRT?

  1. The maximum weight the vehicle is designed to operate at, including load Correct answer.
  2. The actual weight measured at the time of testing
  3. The weight of the heaviest axle only
  4. The weight of the vehicle when empty plus a full tank of fuel

Explanation

DGVW is the manufacturer-specified maximum operating weight of the vehicle including payload. It is a design limit, not a measured or empty weight, and it determines testing thresholds.

Question 8Commercial Vehicle Roadworthiness Testing (CVRT)

A vehicle presented for CVRT has a visibly cracked windscreen within the driver's primary field of vision. How should the tester classify this?

  1. Pass with an advisory note
  2. Fail, as it obstructs or impairs the driver's view Correct answer.
  3. Defer the decision to the vehicle owner
  4. Pass, because windscreens are not inspected

Explanation

Damage within the driver's primary field of vision that impairs visibility is a fail-level defect. The tester, not the owner, determines the outcome according to defined criteria.

Question 9Commercial Vehicle Roadworthiness Testing (CVRT)

Which document is typically required to be presented when a commercial vehicle is submitted for its CVRT?

  1. The vehicle's registration certificate or licensing details Correct answer.
  2. The driver's employment contract
  3. The vehicle's original purchase invoice
  4. A letter from the vehicle insurer

Explanation

Testing requires identifying and registration details for the vehicle so the result can be recorded against it. Employment contracts, purchase invoices, and insurer letters are not part of the standard presentation requirement.

Question 10Commercial Vehicle Roadworthiness Testing (CVRT)

During a CVRT, the tester notes that the exhaust emits visible dense smoke continuously. What is the appropriate interpretation?

  1. A defect, because excessive emissions breach environmental standards Correct answer.
  2. Acceptable if the vehicle passes the brake test
  3. Acceptable if the engine is cold
  4. Acceptable, as emissions are not assessed on commercial vehicles

Explanation

Excessive visible emissions indicate the vehicle fails to meet environmental standards and constitute a testable defect. Passing other systems does not excuse an emissions failure.

Question 11Commercial Vehicle Roadworthiness Testing (CVRT)

What is the significance of a 'roadworthiness certificate' issued after a successful CVRT?

  1. It replaces the need for motor insurance
  2. It guarantees the vehicle will remain defect-free for a year
  3. It confirms the vehicle met the required standards on the date of testing Correct answer.
  4. It certifies the driver's competence

Explanation

A roadworthiness certificate records that the vehicle satisfied the standards at the time of inspection. It is a point-in-time confirmation and does not guarantee future condition, nor does it replace insurance or driver licensing.

Question 12Commercial Vehicle Roadworthiness Testing (CVRT)

A tester is assessing suspension components. Which finding would most likely be recorded as a fail-level defect?

  1. Minor surface rust on a mounting bracket
  2. Slightly different tyre brands on an axle
  3. A light misting of oil on a shock absorber
  4. A broken leaf in a leaf-spring assembly Correct answer.

Explanation

A broken leaf in a spring assembly compromises structural integrity and load support, making it a serious defect. Light misting, mixed tyre brands, and surface rust are generally not fail-level on their own.

Question 13Commercial Vehicle Roadworthiness Testing (CVRT)

Which of the following best describes the role of the tester during a CVRT inspection?

  1. To repair any defects found during the inspection
  2. To negotiate with the owner about which defects to record
  3. To objectively assess the vehicle against defined standards and record the outcome Correct answer.
  4. To certify the vehicle for a specific operator's licence

Explanation

The tester's role is objective assessment against prescribed standards and accurate recording of results. Testers do not carry out repairs, negotiate defect recording, or issue operator licences.

Question 14Commercial Vehicle Roadworthiness Testing (CVRT)

A commercial vehicle's odometer reading is recorded during testing. Why is this information captured?

  1. To determine the vehicle's resale price
  2. To set the next test date automatically
  3. To maintain a record that can help detect odometer tampering Correct answer.
  4. To calculate the vehicle's fuel efficiency

Explanation

Recording mileage creates a verifiable history that can reveal anomalies consistent with odometer tampering. It is not used for fuel calculations, pricing, or automatic scheduling.

Question 15Commercial Vehicle Roadworthiness Testing (CVRT)

Which component failure would most directly affect a vehicle's ability to stop safely and therefore be a critical defect?

  1. A worn windscreen wiper blade
  2. A missing hub cap
  3. A leaking hydraulic brake line Correct answer.
  4. A faded number plate

Explanation

A leaking hydraulic brake line compromises braking force and is a critical safety defect. Wiper blades, hub caps, and plate condition affect other areas and are not equivalent to a brake system failure.

Question 16Commercial Vehicle Roadworthiness Testing (CVRT)

When a defect is found that does not meet the threshold for failure but should be brought to the owner's attention, how is it typically recorded?

  1. As a void test result
  2. As an advisory item on the test record Correct answer.
  3. As a fail item requiring immediate retest
  4. As a criminal offence report

Explanation

Minor defects that do not justify failure are recorded as advisories so the owner is informed. They do not trigger a fail, offence report, or void result.

Question 17Commercial Vehicle Roadworthiness Testing (CVRT)

A trailer submitted for testing has a faulty coupling mechanism. Why is this a serious safety concern?

  1. It could allow the trailer to detach from the towing vehicle Correct answer.
  2. It changes the trailer's registration category
  3. It affects the trailer's paint finish
  4. It increases fuel consumption only

Explanation

The coupling is the primary connection between trailer and towing vehicle; a fault risks detachment and loss of control. It is unrelated to cosmetics, fuel use, or registration category.

Question 18Commercial Vehicle Roadworthiness Testing (CVRT)

What does a 'pass' result on a CVRT indicate about the vehicle at the moment of inspection?

  1. The vehicle will pass all future tests without repair
  2. The vehicle is exempt from further inspection
  3. All tested items met the required standards at that time Correct answer.
  4. The vehicle has no wear on any component

Explanation

A pass confirms that the tested items satisfied the standards on the day of inspection. It does not guarantee future condition, eliminate normal wear, or exempt the vehicle from future testing.

Question 19Commercial Vehicle Roadworthiness Testing (CVRT)

A tester finds that a mandatory direction indicator lamp flashes at the wrong rate. How should this be treated?

  1. As an advisory only, regardless of rate
  2. As a fail, because the flashing rate does not meet the required standard Correct answer.
  3. As acceptable, since the lamp still illuminates
  4. As irrelevant if the vehicle is a trailer

Explanation

Direction indicators must flash within the prescribed rate to be clearly understood by other road users; an incorrect rate is a fail-level defect. Illumination alone is insufficient, and the rule applies to trailers too.

Question 20Commercial Vehicle Roadworthiness Testing (CVRT)

Which practice best ensures consistency when a tester assesses a borderline defect?

  1. Asking the vehicle owner what outcome they prefer
  2. Applying the published inspection criteria uniformly to each vehicle Correct answer.
  3. Comparing the vehicle to others tested that day
  4. Relying on personal judgement without reference to criteria

Explanation

Consistency comes from applying the published inspection criteria uniformly. Personal whim, owner preference, and comparisons with other vehicles undermine objective, repeatable outcomes.

Question 21Commercial Vehicle Roadworthiness Testing (CVRT)

During inspection of a vehicle's chassis, the tester identifies a crack in a main structural member. What is the correct classification?

  1. Pass, if the vehicle is lightly loaded
  2. Pass, if the crack is under 10 cm
  3. Advisory, to be monitored at the next test
  4. Fail, because structural integrity is compromised Correct answer.

Explanation

A crack in a main structural member compromises the vehicle's integrity and load-bearing ability, making it a fail-level defect. Crack size thresholds and load conditions do not make a structural crack acceptable.

Question 22Commercial Vehicle Roadworthiness Testing (CVRT)

What is the purpose of checking a vehicle's speedometer during CVRT where applicable?

  1. To confirm it displays a speed reading consistent with the vehicle's operation Correct answer.
  2. To calculate fuel consumption per kilometre
  3. To verify the driver's average journey speed
  4. To measure the vehicle's top speed on the road

Explanation

Where speedometer checks apply, the aim is to confirm the instrument provides a functional, consistent speed indication. Testing does not measure top speed, driver journey speeds, or fuel economy.

Question 23Commercial Vehicle Roadworthiness Testing (CVRT)

A vehicle presents with a fuel system leak near the engine. Why is this treated as a significant defect?

  1. It only affects appearance
  2. It poses a fire risk and environmental hazard Correct answer.
  3. It is only relevant to petrol vehicles
  4. It improves engine performance

Explanation

A fuel leak creates a serious fire hazard and environmental contamination risk, so it is a significant defect. It is not cosmetic, does not improve performance, and is relevant to any fuel type.

Question 24Commercial Vehicle Roadworthiness Testing (CVRT)

Which item is most directly associated with ensuring a commercial vehicle can be seen clearly by other road users at night?

  1. The rear registration plate lamp Correct answer.
  2. The interior dome light
  3. The glovebox light
  4. The engine bay light

Explanation

The rear registration plate lamp ensures the plate is legible at night, contributing to the vehicle's identification by other road users. Interior, engine bay, and glovebox lights do not serve this road-visibility function.

Question 25Commercial Vehicle Roadworthiness Testing (CVRT)

When a vehicle fails the CVRT, what is normally required before it can be certified as roadworthy?

  1. The vehicle must change ownership
  2. The vehicle must be scrapped immediately
  3. The defects must be rectified and the vehicle re-presented for testing Correct answer.
  4. The owner must appeal to a court

Explanation

A failed vehicle must have the identified defects repaired and be re-presented so the corrected condition can be verified. Court appeals, scrapping, or change of ownership are not standard requirements.

Question 26Commercial Vehicle Roadworthiness Testing (CVRT)

Under CVRT rules, what is the maximum permitted tread depth wear for most tyres fitted to commercial vehicles?

  1. 1.0 mm across the full tread width
  2. 2.5 mm at any single point
  3. 1.6 mm across the central three-quarters of the tread Correct answer.
  4. 3.0 mm across the outer edges only

Explanation

CVRT applies a minimum tread depth of 1.6 mm measured across the central three-quarters of the tread band around the whole circumference for most vehicle tyres. This mirrors the general roadworthiness standard used across commercial testing.

Question 27Commercial Vehicle Roadworthiness Testing (CVRT)

During a CVRT brake test, what does an imbalance between the braking forces on the two wheels of the same axle indicate?

  1. A fault only if the imbalance exceeds 90 percent
  2. That the parking brake has been incorrectly adjusted
  3. A likely fault in the brake system that can cause the vehicle to pull to one side under braking Correct answer.
  4. Normal operation because one wheel always brakes first

Explanation

Significant imbalance between left and right braking forces on an axle reduces directional stability and may cause the vehicle to swerve when braking. Testers record imbalance as a defect because it directly affects safe stopping.

Question 28Commercial Vehicle Roadworthiness Testing (CVRT)

A tester observes that a commercial vehicle's rear registration plate lamp is not working. How should this be classified?

  1. As a defect because the plate must be illuminated so it is readable at night Correct answer.
  2. As irrelevant to roadworthiness
  3. As a defect only if the vehicle operates after dark
  4. As acceptable because the plate is reflective on its own

Explanation

The rear registration plate must be lit so the characters remain legible in darkness. A failed plate lamp is therefore recorded as a defect even though the vehicle may only be used in daylight.

Question 29Commercial Vehicle Roadworthiness Testing (CVRT)

When checking the load security arrangements on a vehicle presented for CVRT, which feature is essential?

  1. A tarpaulin cover over the load
  2. A load that is evenly painted
  3. A manifest displayed in the cab
  4. Restraints capable of preventing load movement during normal driving and emergency braking Correct answer.

Explanation

Load restraints must be strong enough to stop the load shifting under normal driving and sudden braking. The tester checks that the securing system is adequate for the load carried.

Question 30Commercial Vehicle Roadworthiness Testing (CVRT)

A vehicle presented for CVRT has a missing wheel nut on one rear wheel. What is the correct tester response?

  1. Ignore it because other nuts still hold the wheel
  2. Record it only if the tyre is also worn
  3. Treat it as advisory only
  4. Record it as a defect because the wheel fixing is incomplete and could lead to wheel loss Correct answer.

Explanation

Every wheel fixing must be present and secure; a missing nut reduces clamping force and risks wheel detachment. The tester records the incomplete fixing as a defect.

Question 31Commercial Vehicle Roadworthiness Testing (CVRT)

During inspection of the exhaust system, the tester finds a silencer that is insecure and likely to fall off. How should this be treated?

  1. As a minor issue with no roadworthiness impact
  2. As acceptable if the vehicle is otherwise quiet
  3. As a defect only if the emission reading is high
  4. As a defect because a detached exhaust is a hazard to other road users and the vehicle Correct answer.

Explanation

The exhaust must be securely mounted; a loose silencer can detach and endanger following traffic. Insecurity of the exhaust system is therefore recorded as a defect.

Question 32Commercial Vehicle Roadworthiness Testing (CVRT)

What does the CVRT assess regarding a vehicle's lighting aim on headlamps?

  1. That the headlamp switch is illuminated
  2. That daytime running lamps are fitted to every vehicle
  3. That the headlamp colour is always white
  4. That each headlamp is correctly aimed so it illuminates the road without dazzling other drivers Correct answer.

Explanation

Headlamp aim is checked so the beam pattern falls correctly on the road and does not cause glare to oncoming traffic. Incorrect aim is recorded as a defect.

Question 33Commercial Vehicle Roadworthiness Testing (CVRT)

A tester is examining the bodywork of a commercial vehicle and finds a sharp, protruding edge on a damaged panel. Why is this recorded as a defect?

  1. Because it reduces the vehicle's fuel efficiency
  2. Because it affects the vehicle's paint warranty
  3. Because it changes the vehicle's DGVW
  4. Because sharp edges can injure pedestrians and cyclists and may snag other vehicles Correct answer.

Explanation

Projecting sharp edges present an injury risk to other road users, especially vulnerable road users. The tester records such damage because it affects safety.

Question 34Commercial Vehicle Roadworthiness Testing (CVRT)

When the tester checks the doors of a commercial vehicle, which condition is a defect?

  1. A door that does not latch securely in the closed position Correct answer.
  2. A door that opens and closes smoothly
  3. A door with a slightly faded exterior colour
  4. A door with an aftermarket mirror fitted

Explanation

Doors must latch securely so they do not open unexpectedly while the vehicle is moving. A door that fails to latch properly is recorded as a defect.

Question 35Commercial Vehicle Roadworthiness Testing (CVRT)

A vehicle submitted for CVRT has a defective speed limiter that is set above the permitted maximum. How should the tester treat this?

  1. As a defect only on vehicles over 20 years old
  2. As a defect because the limiter must restrict the vehicle to the legally permitted maximum speed Correct answer.
  3. As acceptable if the driver agrees to drive slowly
  4. As a matter for the operator's insurance only

Explanation

Speed limiters on applicable commercial vehicles must be set and functioning at or below the permitted maximum. A limiter set too high or faulty is recorded as a defect.

Question 36Commercial Vehicle Roadworthiness Testing (CVRT)

What is the purpose of checking the vehicle identification number (VIN) during a CVRT?

  1. To calculate the vehicle's tax band
  2. To determine the correct tyre pressures
  3. To confirm the identity of the vehicle matches its documentation Correct answer.
  4. To record the vehicle's fuel type

Explanation

The tester verifies the VIN so the vehicle presented is the one described in its documentation. This guards against identity errors and mismatched records.

Question 37Commercial Vehicle Roadworthiness Testing (CVRT)

A tester finds that a commercial vehicle's brake fluid reservoir is below the minimum level. What is the appropriate response?

  1. Record a defect because low fluid may indicate a leak or worn brakes affecting stopping performance Correct answer.
  2. Record it only if the pedal feels soft
  3. Ignore it because fluid level is not part of CVRT
  4. Top up the fluid and pass the vehicle without recording it

Explanation

Brake fluid below the minimum can indicate leakage or excessive pad wear and may compromise braking. The tester records the condition rather than rectifying it during the test.

Question 38Commercial Vehicle Roadworthiness Testing (CVRT)

When inspecting seat belts in a commercial vehicle, which finding is a defect?

  1. A belt that is correctly anchored
  2. A belt with a frayed or cut webbing Correct answer.
  3. A belt that retracts fully and smoothly
  4. A belt with a manufacturer's label present

Explanation

Seat belt webbing must be free from cuts and fraying because damaged webbing can fail under load. Frayed webbing is therefore a defect.

Question 39Commercial Vehicle Roadworthiness Testing (CVRT)

A tester is assessing a commercial vehicle's mirrors. Which condition would be recorded as a defect?

  1. A mandatory mirror that is missing or gives an inadequate view to the rear Correct answer.
  2. A mirror that is adjusted to the driver's position
  3. A mirror housing that is clean
  4. A mirror with an electrically operated adjustment

Explanation

Mandatory mirrors must be present and provide the required rearward field of view. A missing mirror or one giving an inadequate view is a defect.

Question 40Commercial Vehicle Roadworthiness Testing (CVRT)

What does the CVRT check regarding the vehicle's fuel tank and fuel lines?

  1. That the tank is always full
  2. That they are secure, free from leaks, and not chafed or damaged Correct answer.
  3. That the tank is made of steel
  4. That the fuel cap is a particular colour

Explanation

Fuel tanks and lines must be securely mounted and free from leaks and damage that could cause a fire hazard. The tester checks for security and integrity.

Question 41Commercial Vehicle Roadworthiness Testing (CVRT)

A commercial vehicle presented for test has a defective horn that does not sound. How should the tester treat this?

  1. As acceptable if the vehicle is only used in daylight
  2. As a defect only on buses
  3. As a defect because the horn is a required warning device Correct answer.
  4. As acceptable because the horn is optional

Explanation

A functioning horn is a prescribed warning device used to alert other road users to danger. A horn that fails to sound is recorded as a defect.

Question 42Commercial Vehicle Roadworthiness Testing (CVRT)

During a CVRT, the tester finds the steering wheel has excessive free play. What does this indicate and how should it be treated?

  1. Wear in the steering system that reduces control precision, recorded as a defect Correct answer.
  2. Something the driver can correct by gripping harder
  3. A fault only if the vehicle is heavily loaded
  4. A normal characteristic of all commercial vehicles

Explanation

Excessive free play indicates wear in steering components and reduces the driver's ability to control the vehicle precisely. It is recorded as a defect.

Question 43Commercial Vehicle Roadworthiness Testing (CVRT)

What is the purpose of the CVRT check on the vehicle's suspension shock absorbers?

  1. To confirm they reduce exhaust emissions
  2. To confirm they adjust the headlamp aim
  3. To confirm they control wheel movement and maintain tyre contact with the road Correct answer.
  4. To confirm they increase the vehicle's payload

Explanation

Shock absorbers control spring oscillation so the tyres maintain contact with the road, which affects grip and stability. The tester checks them for leakage and effectiveness.

Question 44Commercial Vehicle Roadworthiness Testing (CVRT)

A tester notes that a commercial vehicle's tyres have visible bulges or cuts in the sidewall. What is the correct classification?

  1. Acceptable if the tread depth is adequate
  2. A defect only on the front axle
  3. A defect because structural damage to the sidewall risks sudden tyre failure Correct answer.
  4. Advisory only because the tyre still holds air

Explanation

Sidewall bulges and deep cuts indicate structural damage that can lead to blowouts. Such damage is a defect regardless of tread depth.

Question 45Commercial Vehicle Roadworthiness Testing (CVRT)

When a vehicle is presented for CVRT and the tester finds the windscreen washer system is not working, how should this be treated?

  1. As a matter for the driver's discretion
  2. As acceptable because wipers still operate
  3. As a defect only in winter
  4. As a defect because the driver must be able to clear the windscreen to maintain visibility Correct answer.

Explanation

A functioning washer is needed to clear the windscreen and maintain the driver's view. A failed washer system is recorded as a defect.

Question 46Commercial Vehicle Roadworthiness Testing (CVRT)

A commercial vehicle is presented with a leaking hydraulic brake line. Why is this a significant defect?

  1. Because it wastes brake fluid
  2. Because loss of hydraulic pressure can lead to partial or total brake failure Correct answer.
  3. Because it increases fuel consumption
  4. Because it stains the road surface

Explanation

Hydraulic brake lines must be fluid-tight; a leak can cause pressure loss and reduce or eliminate braking. The tester records the leak as a serious defect.

Question 47Commercial Vehicle Roadworthiness Testing (CVRT)

A tester is checking a vehicle's tachograph installation. Which condition is a defect?

  1. A tachograph that has not been calibrated within the required period Correct answer.
  2. A tachograph fitted by the manufacturer
  3. A tachograph that records distance
  4. A tachograph with a clean display

Explanation

Tachographs must be calibrated at prescribed intervals and sealed correctly. An out-of-calibration unit is recorded as a defect.

Question 48Commercial Vehicle Roadworthiness Testing (CVRT)

During a CVRT, a tester finds a commercial vehicle's rear underrun protection bar is missing. What is the correct interpretation?

  1. Acceptable because the bar is optional equipment
  2. A defect because the bar protects other road users from underrunning the vehicle in a collision Correct answer.
  3. A defect only on articulated vehicles
  4. Acceptable if the vehicle carries no load

Explanation

Rear underrun protection reduces the severity of collisions by preventing other vehicles from sliding beneath the rear of the vehicle. Where required, its absence is a defect.

Question 49Commercial Vehicle Roadworthiness Testing (CVRT)

A tester observes that a commercial vehicle's tyres are of a type not suitable for the axle on which they are fitted. How should this be treated?

  1. As a matter for the operator's tyre supplier
  2. As a defect only if the tyres are retreaded
  3. As acceptable if the tread depth is above the minimum
  4. As a defect because tyre construction and load rating must suit the axle and vehicle Correct answer.

Explanation

Tyres must be appropriate for the axle and capable of carrying the imposed load, so unsuitable fitment is a defect. Tread depth alone does not establish suitability.

Question 50Commercial Vehicle Roadworthiness Testing (CVRT)

What is the significance of the tester recording an advisory defect on a CVRT report?

  1. It automatically fails the vehicle
  2. It exempts the vehicle from future testing
  3. It informs the owner of a condition that should be monitored or repaired even though it did not cause a failure Correct answer.
  4. It replaces the need for a roadworthiness certificate

Explanation

Advisory items are noted so the owner is aware of developing issues that do not currently meet the failure threshold. They help prompt maintenance without affecting the pass outcome.