The goal of roadworthiness testing is to check the functionality of safety components, the environmental performance and the compliance of a vehicle with its approval.
The safety and environmental parts are what we have in the UK at present. The compliance with the vehicles approval is the new part. Each vehicle has a statement of conformity from the manufacturer, its type approval. This states that the vehicle meets all the requirements to allow it to be sold to joe public.
If you have a modified car, it no longer meets the type approval and so must fail the test.
Historic vehicles have an exemption from the test provided that they meet the following requirements.
It was manufactured at least 30 years ago,
– It is maintained by use of replacement parts which reproduce the historic
components of the vehicle;
– It has not sustained any change in the technical characteristics of its main
components such as engine, brakes, steering or suspension and
– It has not been changed in its appearance
Fair enough if you have a standard historic car which hasn't been modified in any way, but how many have such a beast? Even fitting later, better brakes to a car means that it has been modified and is the excluded from the exemption and has to be tested.
Because it has been modified it doesn't meet type approval and so must fail the test.
If my interpretation is wrong I'll hold my hand up, but I don't think I'm far off the mark.
There is an epetition live. Please sign it. It needs at least 100,000 signatutes to force a debate in the House of Commons. A poor show will not help the case against this proposal.