Donna Jones, the Police and Crime Commissioner for Hampshire and the Isle of Wight, has called on the Government to introduce more stringent measures to tackle the problem of illegally modified car and motorcycle exhaust systems.
On Wednesday, August 12, the Commissioner announced the launch of an online survey inviting local residents to share their experiences on the issue, with responses open until Tuesday, September 1. “The noise from these modified motorbikes and cars is unacceptable and unbearable for many,” Jones said. “Countless people have told me the constant racket is ruining their ability to enjoy their homes and get a good night’s sleep. A lack of clear guidance from the government is making enforcement tricky and inconsistent, which is why ministers need to give police forces a clear, enforceable decibel limit and standardized noise-measuring equipment.”
For new Euro5+ compliant motorcycles, the maximum noise level depends on the power-to-weight ratio, but most category A licence bikes need to stay under 77dB(A). Lower-powered models are capped at 73dB(A), with testing done by riding between two microphones at 50kph (31mph), placed 15 metres apart.
When it comes to MoT time, as long as the exhaust is legal for road use, it’s ultimately up to the tester to decide if it’s too loud. Government guidelines suggest that, where possible, the tester should rev the bike to half engine speed once it’s warm and check that “the noise emitted from the motorcycle is not clearly unreasonably above the level expected from a similar motorcycle with a standard silencer in average condition.” Riders found breaking the rules could face a verbal warning or a £50 fine. The Commissioner is now pushing for a national decibel limit and the use of noise cameras to catch offenders.
Jones stated that the Department for Transport’s 2022 noise camera trials demonstrated the effectiveness of acoustic camera technology in identifying vehicles producing excessive noise. While the technology is already available, what is now required is a robust policy framework and legislative support to ensure its effective deployment. Establishing a defined roadside decibel limit, coupled with clear national guidance, would not only assist police and local authorities in gathering stronger evidence but also serve as a significant deterrent to illegal modifications and anti-social driving behavior. It is essential that drivers and riders fully understand the regulations and their consequences, which can be achieved through comprehensive education and consistent enforcement.
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