[QUOTE 3755783, member: 9609"]I think some of it was revised within the last few years. Norfolk Constabulary quote the following on
this web page they can't have just made that up ?
- The vast majority of large or big bore exhausts are illegal for use on public roads. The fact they may have passed an MOT test is irrelevant as this only checks for exhaust gasses and emission legislation compliance.
- Big bore and sports exhaust systems are usually fitted to increase the sound emitted and this contravenes the Type Approval of the vehicle, which is an offence. There is no requirement for a police officer to measure the sound level from the exhaust system, it only requires an opinion that the system is not standard and that it is noisier than a normal vehicle of the same specification.
- It is not an offence to sell these exhaust systems, but it is an offence to fit one to your vehicle and drive it on a public road. Motorists who do so could be reported to court and may face a fine and court costs.
Now I can't find where this is written into law, or if it does or doesn't apply within Scotland. Local plod seems to think if it passes its MOT then its fine by him, I think / hope he is wrong.[/QUOTE]
There will be new EU wide noise & emissions regulations relating to any new vehicles constructed since the law was enacted, which I don't think can be applied retrospectively to existing vehicles.
I think Norfolk Constabulary have summarised the mumbo jumbo official word of the law into layman's terms.
The law is still based on the Road Vehicles (Construction & Use) Regulations 1986 as linked above, however the downfall of the legislation.gov.uk website is that it's easy to see the original wording of the law not the current version. It's possible to go through all the amendment's but it takes forever...
http://www.legislation.gov.uk/changes/affected/uksi/1986/1078
With regards to the MOT test the Norfolk Constabulary need to check some of their facts
Norfolk Constabulary said:
...an MOT test is irrelevant as this only checks for exhaust gasses and emission legislation compliance.
The MOT Inspection Manual for Class 1+2 vehicles (motorcycles) states
(
https://www.gov.uk/government/uploa.../429028/mot-inspection-manual-classes-1-2.pdf page 72)...
Method of Inspection
2. With the engine running assess the effectiveness of the silencer(s) in reducing as far as is reasonable the noise emitted.
3. Check the silencer(s) on all machines for any unacceptable markings.
Reasons for Rejection
2. A silencer that is in such a condition or is of such a type that the noise emitted is clearly in excess of that which would be produced by a similar machine fitted with a standard silencer in average condition.
3. A silencer marked ‘NOT FOR ROAD USE’, ‘TRACK USE ONLY’ or similar words.
And for Classes 3, 4, 5 & 7 (cars etc) the MOT Manual states
(
https://www.gov.uk/government/uploa...nspection-manual-classes-3-4-5-7-vehicles.pdf , page 157)
Method of Inspection
4. During all parts of the emissions test relevant for the vehicle, assess subjectively the effectiveness of the silencer in reducing exhaust noise.
Reason for Rejection
4. A silencer in such condition, or of such a type, that noise emitted from the vehicle is clearly unreasonably above the level expected from a similar vehicle with a standard silencer in average condition.
The problem is the MOT test is subjective, it could've be solved by requiring each test center to have a decibel meter. I believe the standard VOSA test is to use the meter 0.5 meters away at an angle of 45 degrees from the exhaust at a certain level of revs.
I think your best bet is to mention a Section 59 notice to your local police regarding antisocial use of a vehicle.