National/ International Circuit – 105dB on a static test and 102dB on a drive-by test.
Grand Prix Circuit – will be in compliance with MSA championship regulations relevant to the vehicle being tested, maximum limit 108dB static test and 105dB on a drive by test,
Noise limits will be applied in accordance with our circuit regulations as follows:
National Circuit – 105dB on a static test and 102dB on a drive-by test. Grand Prix Circuit – will be in compliance with MSA championship regulations relevant to the vehicle being tested, maximum limit 108dB static test and 105dB on a drive by test, if in doubt please call.
Please see Section (J) Common Regulations for Competitors :
Vehicles - Appendix 1 Chart 5.18: Maximum Noise Limits Drive by limits will be 3dB less than those levels stipulated in the ‘Blue Book’ Offending vehicles will not be allowed to continue testing.
Should your vehicle fail the static or the drive by noise test and you are excluded from further participation, you will not receive a refund. If you believe that your vehicle may exceed the above limits then please request a noise test prior to going out on circuit.
For the avoidance of doubt measurements are taken at 0.5m at a 45 degree angle with engine running at ¾ maximum revs.
There are 3 noise meters located around the circuit which will measure your drive-by noise limit. No racing engines may be run before 08:30 hrs or after 17:30 hrs.