Got interested in this and this site is very good and will apply equally in England and Wales:
http://www.scotland.gov.uk/Publications ... 6984/21399" onclick="window.open(this.href);return false; - keep clicking on 'next' and it goes through the whole shabang
Of interest:
1 The council have no legal power to stop a vehicle on a road (they need a police officer to do this - I assume from the breathalyser comment in the original post it was a police officer who pulled Mandrake over?)
2 You can refuse to take the test then and there and defer it, but then
you will have to pay for an MOT test to be done in the next 14 days (so you might as well take a free test and hope??)
3 The advice is to only give fixed penalties for vehicles that fail by
more than 10% above MOT standard
4 Some councils have done 'voluntary' emissions checks in the past - at these they have no power to test your vehicle without your consent or to detain you to do so, they usually do these at car parks etc, where they don't use a police officer to stop vehicles
5 These regulations only apply to vehicles
'in or about to enter a designated as an air quality management area' so it might be worth knowing whether your local council has been designated
6 It's obvious really, is there much point pulling in a 12 month old car to check its emissions? If you drive an older car you're more likely to be checked at one of these.
7 If you happen to be in a designated area you can be fined £20 for sitting with your engine running for no reason too, although education
should be the first option ie 'would you mind turning your engine off please'