New police rulling on exhausts
28 October 2002, 04:49 PM
#92
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Good post guys and this is a cause for concern especially when you get some spotty **** assed copper who has to prove his worth.
My skyline is like 107 dbs at 5000 rpm (recently measured at a track day) so rather loud. sounds even worse because of the induction noise
But so far I have no had any probs. (touching wood here..normally cloth!)
I guess if you see the grabbers don't rip it past them or pootle by.
Surely they would have to have some sort of detection systems ON THEM plus a WITNESS to record it and a print out of the reading??. Otherwise any ticket is not worthy of anything in court?
I think it is best to appease them tho and keep the old right boot a bit lighter if you see them.
keep up the good threads.
I will post oon GTR as well.
Nick
My skyline is like 107 dbs at 5000 rpm (recently measured at a track day) so rather loud. sounds even worse because of the induction noise
But so far I have no had any probs. (touching wood here..normally cloth!)
I guess if you see the grabbers don't rip it past them or pootle by.
Surely they would have to have some sort of detection systems ON THEM plus a WITNESS to record it and a print out of the reading??. Otherwise any ticket is not worthy of anything in court?
I think it is best to appease them tho and keep the old right boot a bit lighter if you see them.
keep up the good threads.
I will post oon GTR as well.
Nick
28 October 2002, 05:25 PM
#93
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Re Not.Revs comment:
The VDRF can (and should) be offered as an alternative to issuing the fine. It applies to all vehicle defects. However, if the officer thinks that the defect is too serious then they can issue a ticket. The theory being that the administration behind issuing the fine costs far in excess of £30. So rather than cost them time and money, they give you the chance to sort out the problem (which at the end of the day is the important thing) before taking it further.
There is no point asking about the VDRF if they have already issued a ticket - it is too late by then!!
Chris
The VDRF can (and should) be offered as an alternative to issuing the fine. It applies to all vehicle defects. However, if the officer thinks that the defect is too serious then they can issue a ticket. The theory being that the administration behind issuing the fine costs far in excess of £30. So rather than cost them time and money, they give you the chance to sort out the problem (which at the end of the day is the important thing) before taking it further.
There is no point asking about the VDRF if they have already issued a ticket - it is too late by then!!
Chris
28 October 2002, 06:13 PM
#94
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thanks for that chris and a good point.
Someone posted this on GTR and this is relevant for Import cars in particular as this is the regs from the SVA test...and that is what makes your car legel over here:
The offical line on sound is that if the car is louder than 101db, then its not legal... but id have him check the sound level using a correctly calibrated sound meter... they need evidence to nick you for anything
this was given to me by the Vehicle Inspectorate for my SVA...
101 db @ 500mm from exhaust tip, 200mm from ground level, or exhaust height (whichever is higest) @ 45 degrees from the car @ 3/4 max engine speed
Sorry for UK owners as there are not many UK GTRs I am afraid....100 33s and 100 34s!! all teh rest are imports.
Nick
Someone posted this on GTR and this is relevant for Import cars in particular as this is the regs from the SVA test...and that is what makes your car legel over here:
The offical line on sound is that if the car is louder than 101db, then its not legal... but id have him check the sound level using a correctly calibrated sound meter... they need evidence to nick you for anything
this was given to me by the Vehicle Inspectorate for my SVA...
101 db @ 500mm from exhaust tip, 200mm from ground level, or exhaust height (whichever is higest) @ 45 degrees from the car @ 3/4 max engine speed
Sorry for UK owners as there are not many UK GTRs I am afraid....100 33s and 100 34s!! all teh rest are imports.
Nick
28 October 2002, 06:40 PM
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The cop wouldn't stand a chance of success under the rules regarding 'volume' however you will find the 'law' that this relates to is to do with the 'nuisance factor' and it is in this matter that you come unstuck, volume levels are to some extent now used as a simple guide for normal monitoring, if however the 'officer' claims you have been causing a public nuisance then even if your car is below the legal requirements you WILL get a caution for the first offence, repeated violations can be a roadside fine but 3 strikes and you can lose your licence.
I append the correct method for measuring sound at the roadside, it is complex to do and for this reason 'discretionary powers' are given to the officer, and damned right too, if you have a loud exhaust and you go around being a bloody nuisance then perhaps a brick thru the windscreen might be more effective, 'have been tempted meself at times recently.
First ascertain the peak power revs, multiply this figure by 0.75, this is the test RPM, you elevate your revs to this test level and allow the engine to settle 8 seconds and then the accelerator released, the 'weighted' db sensor is 500mm from the tip at 45degrees to it.
During this procedure a peak value will be recorded, now if you open your throttle fully the car will roar like a lion, however if you use the full 30 seconds allowed in law to take your car upto that 'three-quarter' throttle point she will just purr like a little ***** cat, most performance cars can then pass this test with ease.
But 77db+1db is the limit.
If you are dumb enough at the road side to blip the throttle upto the 'three-quarter' point then, well as they say 'one is born every minute' and you get yer ahse kicked.
There is nothing in law to restrict volume at tick-over or just sitting at 6000rpm.
Edited again due to complete failure to spell any bloody thing at the moment!?!
[Edited by Mycroft - 10/29/2002 1:18:12 AM]
[Edited by Mycroft - 10/29/2002 1:19:35 AM]
I append the correct method for measuring sound at the roadside, it is complex to do and for this reason 'discretionary powers' are given to the officer, and damned right too, if you have a loud exhaust and you go around being a bloody nuisance then perhaps a brick thru the windscreen might be more effective, 'have been tempted meself at times recently.
First ascertain the peak power revs, multiply this figure by 0.75, this is the test RPM, you elevate your revs to this test level and allow the engine to settle 8 seconds and then the accelerator released, the 'weighted' db sensor is 500mm from the tip at 45degrees to it.
During this procedure a peak value will be recorded, now if you open your throttle fully the car will roar like a lion, however if you use the full 30 seconds allowed in law to take your car upto that 'three-quarter' throttle point she will just purr like a little ***** cat, most performance cars can then pass this test with ease.
But 77db+1db is the limit.
If you are dumb enough at the road side to blip the throttle upto the 'three-quarter' point then, well as they say 'one is born every minute' and you get yer ahse kicked.
There is nothing in law to restrict volume at tick-over or just sitting at 6000rpm.
Edited again due to complete failure to spell any bloody thing at the moment!?!
[Edited by Mycroft - 10/29/2002 1:18:12 AM]
[Edited by Mycroft - 10/29/2002 1:19:35 AM]
12 November 2002, 06:38 PM
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Not on the law, but interesting fact: MY02 WRX, stock exhaust held at 5000rpm 1m from tip at 45ŗ etc, as per SVA test, gives 78dB. Therefore, very marginal if it would pass the test mycroft suggested. STi7 with prodrive bbox and straightthrough centre (i.e should be about equivalent to a PPP'd WRX) = 89dB at 5000rpm held. From readings on iwoc board, many aftermarket exhausts are in the mid 90s, Blitz etc over 100 (These are average with revs held steady, NOT peak values).
The OEM WRX exhaust from behind is probably quieter than an average car IMHO. If that is right at the maximum limit, I suspect over half the cars on the road would fail the test coming out of the showroom. PPP would have no chance.
I don't know about the SVA limit, but it seems more likely to me?
The OEM WRX exhaust from behind is probably quieter than an average car IMHO. If that is right at the maximum limit, I suspect over half the cars on the road would fail the test coming out of the showroom. PPP would have no chance.
I don't know about the SVA limit, but it seems more likely to me?
12 November 2002, 06:54 PM
#100
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Also just thought about this, how can he stop you and say that your exhaust is illegal then just give you a fine!
If your exhaust is illegal then surely, the insurance company are also in the wrong as youve told them you have an aftermarket exhaust and they have still insured you!
Or Can they turn around and say, oh no youve got an aftermarket exhaust which the law says is illegal, therefore the insurance would be null and void, and you would be driving without any insurance which again would incurr a further fine, and indeed points and maybe a ban!
And in my case where i have had an exhaust made up to fit my car, and the reciept that came with it says, something like Longlife will not make an exhaust that will make the car road illegal, due to noise or other such things! (or summin like that! I'll have a look tonight!)
There fore i could then sue the exhaust company for selling and fitting, an illegal exhaust, the insurance company for knowingly and falsely insuring myself and my car, when the after market (and supposedly illegal) exhaust was declared on the policy!!
Hmm hope this makes sense to you, as ive confused myself!
If your exhaust is illegal then surely, the insurance company are also in the wrong as youve told them you have an aftermarket exhaust and they have still insured you!
Or Can they turn around and say, oh no youve got an aftermarket exhaust which the law says is illegal, therefore the insurance would be null and void, and you would be driving without any insurance which again would incurr a further fine, and indeed points and maybe a ban!
And in my case where i have had an exhaust made up to fit my car, and the reciept that came with it says, something like Longlife will not make an exhaust that will make the car road illegal, due to noise or other such things! (or summin like that! I'll have a look tonight!)
There fore i could then sue the exhaust company for selling and fitting, an illegal exhaust, the insurance company for knowingly and falsely insuring myself and my car, when the after market (and supposedly illegal) exhaust was declared on the policy!!
Hmm hope this makes sense to you, as ive confused myself!
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