Static Tests

All vehicles participating in track days at Snetterton must conform to the noise limit, on a static test, of 105 dB(A).

Noise checks to establish adherence to the relevant limit will be conducted in accordance with current measuring methods as defined by the MSA. Essentially this means that the noise test shall be measured from a position 0.5m behind the exhaust at a 45 degree angle, with the engine running at ¾ maximum revs.

In cases where the vehicle has two separated exhausts the measurement will be taken as above from the median point between the two.

If MSV is of the opinion that any vehicle does not comply with the applicable noise restrictions, the relevant vehicle will be prevented from participating in the remainder of the event unless and until the noise emissions are addressed to bring them within the applicable limit.

Drive-by Monitoring

Whilst MSV do not currently impose a drive-by limit at Snetterton, in the interests of ensuring that the spirit of the noise level limits is respected, MSV do monitor drive-by levels using noise meters located around the circuit.

If the results of the drive-by monitoring show that a particular vehicle is generating drive-by sound levels appreciably higher than vehicles with comparable static test results, then MSV staff will notify the participant, and the relevant vehicle shall not be permitted to take further part in the event until the participant has addressed the noise levels generated by their vehicle to bring them within acceptable sound levels.

Further participation in the track day may be precluded if acceptable drive-by limits cannot be achieved at the first drive-by test following the addition of extra silencing.

No race engines may be run before 0830hrs or after 1830hrs.