Are replacement headlights and tail lights legal in Australia?

Replacement headlights and tail lights on a registered car must meet the Australian Design Rules and the relevant state or territory roadworthiness rules. In practice, the lighting must be the right type for the vehicle, installed correctly, and comply with the ADRs that cover lamp position, colour, intensity and beam pattern. LED globes in halogen housings are not automatically compliant.

What the ADRs cover

The Australian Design Rules set the technical standards for vehicle lighting. For most road vehicles, ADR 13/00 covers how lighting and light-signalling devices are installed. It deals with position, orientation, number, colour, intensity and wiring for lamps such as headlamps, tail lights and indicators.

Other ADRs deal with lamp performance. ADR 46/00 covers headlamps and their beam pattern, intensity and colour. ADR 49/00 covers rear position lamps, which includes tail lights. ADR 103/00 is the newer road illumination rule and covers headlamps and other forward-illumination devices for L, M and N category vehicles.

Taken together, these ADRs mean a replacement lamp is not judged only by appearance. It has to match the technical and installation requirements that apply to that vehicle category and lamp type.

What a replacement lamp has to comply with

For a registered vehicle, a replacement headlamp or tail lamp must be a specification known to comply with the lighting ADRs for that year model. The ACT Light Vehicle Inspection Manual says replacement lights must be of a specification known to comply with the applicable lighting ADRs for that year model.

For headlamps, the relevant ADRs are ADR 13/00 and ADR 46/00, and ADR 103/00 where it applies. For tail lamps, the relevant ADRs are ADR 13/00 and ADR 49/00. The lamp also has to be installed in accordance with ADR 13/00, including its rules about position, colour, number and wiring.

The material also notes that states and territories enforce ADRs through their own inspection and defect rules. That means the legal test is not just whether the lamp fits, but whether it is the right type and is installed in the way the rules require.

Markings and approvals to look for

The ADR material shows that Australia recognises UN Regulations for some lighting requirements, including headlamps. ADR 103/00 and the related headlamp material refer directly to UN Regulations Nos. 98 and 112. On that basis, E-marked approvals can be accepted where they are correctly applied and the lamp meets the relevant ADR.

What can be verified is that a replacement lamp should be certified or known to comply with the relevant ADRs, and that it should be installed in accordance with ADR 13/00. The retrieved material does not set out a single national marking format that must appear on every replacement lamp, and it does not give a complete list of every external marking that must be moulded into every housing.

If you need the exact marking requirement for a specific lamp type, the full text of the relevant ADR and UN Regulation needs to be checked. The excerpts here do not settle every marking detail.

State and territory rules still matter

States and territories apply the ADRs through their own roadworthiness and modification systems. That means there can be extra inspection or defect rules on top of the federal ADR requirements.

Tasmania gives one example. Its vehicle regulations say a tail light on a light vehicle must show a red light visible 200 metres from the rear when switched on, and it must not use over 7 watts power. That is a state-specific performance rule layered over the ADR tail lamp standard.

The Northern Territory inspection manual gives another example. For vehicles manufactured after 1959, it requires two red tail lights mounted no more than 1500 mm above the ground, among other lighting requirements. South Australia and the ACT also state their own inspection positions on replacement and modified lighting.

Because these rules vary by state or territory, the answer depends on where the vehicle is registered. Check with your own state or territory road authority for the current inspection and modification rule that applies to your vehicle.

LED globes in halogen housings

The ADRs focus on performance, not just the type of globe. South Australia’s guidance says retro-fitting original headlamps with non-ADR-complying aftermarket globes or non-standard lamp assemblies on the dipped beam circuit does not guarantee ADR compliance. It also says high-output source lamps and assemblies used as dipped beam must be certified to comply with ADR 13/00 and ADR 46/00, and other related ADRs where applicable.

That means replacing a halogen globe with an aftermarket LED globe in a housing built for halogen is not automatically legal. The light source geometry changes, which can change the beam pattern, colour and intensity. The material states that industry summaries treat aftermarket LED bulbs in halogen headlight housings as not compliant with the ADRs for road use unless the lamp assembly itself has been type-approved for that use.

For tail lights, the same basic principle applies. The replacement has to comply with ADR 13/00 and ADR 49/00, and it has to meet any extra state or territory inspection requirement.

What to check before fitting a replacement lamp

Check which ADR applies to the lamp type: ADR 46/00 or ADR 103/00 for headlamps, and ADR 49/00 for tail lamps.
Check that the lamp is known to comply with the relevant ADRs for that vehicle year and model.
Check that the installation meets ADR 13/00 for position, colour, number, intensity and wiring.
If the vehicle is in Tasmania, the Northern Territory, South Australia, the ACT, or another state, check the local inspection or modification rule as well.
If you are considering an LED globe in a halogen housing, check with your state road authority whether that setup is accepted for road use.

The state or territory road authority is the place to check the current rule that applies to your vehicle.