HK PVOC Grade 2 Part A key terms

A document issued after a vehicle passes the statutory examination, confirming that at the time of inspection it met the prescribed construction, safety, emissions and noise requirements. Its validity period and conditions are fixed by law.

The formal record given to an owner when a vehicle satisfies every applicable examination item. It states the examination date and the date by which the next examination falls due.

The official instruction requiring a vehicle to be presented for examination by a stated date. Failure to comply can lead to enforcement action against the registered owner or licensee.

The condition of a vehicle being fit and safe for use on a road, judged against statutory standards for structure, brakes, steering, tyres, lights, emissions and bodywork. It is assessed at a point in time, not permanently guaranteed.

The system that grades every fault found during examination by severity, typically as dangerous, major or minor, so that the outcome and any prohibition follow consistently from the finding.

A fault that creates an immediate risk of harm to the vehicle occupants or other road users. Its presence normally means the vehicle must not be used until repaired, and a prohibition may be issued.

A significant fault that affects safety, the environment or the vehicle's compliance with construction requirements, but does not create an immediate danger. It normally causes the examination to fail and must be rectified before a pass is issued.

A small fault with no material effect on safety or emissions at the time of inspection. It is recorded and advised to the owner, but does not by itself prevent a pass.

A note recorded by the examiner about a condition that is not yet a defect but is likely to deteriorate, such as tyres nearing the wear limit. It informs the owner without affecting the result.

An official direction preventing a vehicle from being used, or restricting its use, because a dangerous defect or serious non-compliance has been found. It remains in force until the specified repair and re-examination are completed.

The outcome recorded when a vehicle has one or more dangerous or major defects. The examiner documents each defect, and the vehicle must be repaired and presented again before a certificate can be issued.

A further inspection of a vehicle after defects have been corrected, which may cover only the previously failed items or the whole vehicle depending on the rules. A fee is normally payable.

The complete written or electronic account of an examination, listing every item checked, every defect found with its classification, and the result. It is the evidential basis for the certificate and any later dispute.

The traceable sequence of records showing who examined a vehicle, when, using what equipment, and what was found. It allows supervisory review and supports integrity in the examination process.

Documentation proving that test equipment such as brake testers, headlamp aligners, gas analysers and sound level meters has been checked against known standards within the required interval. Uncalibrated equipment undermines examination validity.

The unique alphanumeric identifier displayed on a vehicle's number plates and recorded in the register. Examiners use it to match the vehicle presented against the registered particulars and certificate history.

The manufacturer's unique vehicle identification number stamped into the structure, used to confirm identity and detect ringing or re-shelling. It must be legible, unaltered and consistent with documentation.

The recorded details of a vehicle such as make, model, seating capacity, gross weight, engine size and fuel type. Examiners compare these against the physical vehicle to detect unapproved changes.

The measured braking performance of a vehicle, usually expressed as a percentage of deceleration or as the ratio of braking force to weight. It must reach the statutory minimum on service, secondary and parking brakes.

A difference in braking force between the wheels on the same axle, or side-to-side variation during a brake test. Excessive imbalance causes pulling or instability and is treated as a defect.

A machine with driven rollers that measures the braking force at each wheel while the vehicle is driven slowly through it. It gives repeatable readings for efficiency and imbalance assessment.

The direction and cut-off pattern of a headlamp beam, checked with an aligner to ensure adequate illumination without dazzling other road users. Incorrect aim is a common examination failure.

The technique of shielding part of a headlamp lens, or the shielding built into the lamp, to control the beam pattern for left- or right-hand traffic. It must suit the direction of traffic where the vehicle is used.

The height of the rubber blocks across the tyre tread, measured in the specified grooves. It must meet the statutory minimum across the central band and around the whole circumference.

The state of a tyre regarding cuts, bulges, separation, exposed cords and correct matching of construction and size on an axle. Structural damage is treated as dangerous regardless of tread depth.

Any change to a vehicle's load-bearing structure, such as chassis alteration, lengthening or re-shelling. Such work must be approved and inspected, since it can affect strength, handling and compliance.

The formal acceptance that a change to a vehicle, such as altered suspension, seating or bodywork, meets the applicable requirements. Unapproved modifications can invalidate the certificate and registration particulars.

The process by which a vehicle model or component is approved as meeting prescribed design and safety standards before sale or registration. Individual vehicles are then checked for conformity with the approved type.

The requirement that vehicles and components continue to match the approved type when manufactured in series. It assures examiners that a presented vehicle should reflect the approved design.

A vehicle built or adapted for a specific non-standard function, such as a crane carrier, fire appliance or recovery truck. It may be examined against particular requirements reflecting its design and use.

The maximum permissible total weight of a vehicle including its load, set by the manufacturer and recorded in the particulars. Exceeding it affects braking, tyres and structural safety and is a compliance issue.

The weight carried by a single axle or axle group, which must not exceed the plated or statutory limit. It is relevant to suspension, tyre and brake assessment during examination.

An instrument that measures the density of smoke in the exhaust of a diesel vehicle against a light beam. Readings must fall within prescribed limits and the meter must be calibrated.

The measurement of pollutants such as carbon monoxide, hydrocarbons and lambda value from a petrol engine, or smoke density from a diesel, at idle and raised speed. Results must meet statutory limits.

An exhaust component that converts harmful gases into less harmful ones using a catalyst. Its presence and correct functioning are relevant to emissions compliance and to detecting tampering.

The maximum sound pressure a vehicle may produce under specified measurement conditions, such as at a stated distance and engine speed. Excessive or altered exhaust noise is a defect.

The exhaust component that reduces engine noise to within permitted levels. It must be present, securely mounted, in good condition and not modified to increase sound output.

A situation where an examiner's personal, financial or business interest could improperly influence an examination decision. It must be declared and avoided to preserve impartiality and public trust.

The commitment of an examiner to honesty, objectivity and consistent application of the rules, refusing bribes or pressure and reporting findings truthfully regardless of who owns the vehicle.

The planned procedures that control hazards in the examination bay, including vehicle movement, lifting, pit access, exhaust fumes and electrical equipment, so that staff and visitors are protected.