Electric vehicles will help reduce air pollution, noise and carbon emissions, although alone they are not enough. It’s a similar story with cutting noise on the road. Vehicle noise is created by a combination of rolling noise (arising from the tyres interacting with the road) and propulsion noise (comprising noise from engines, exhaust systems, transmissions and brakes). As a rule of thumb, tyre–road interaction is the main source of noise at above 25–35mph for cars and at above about 40–43mph for lorries, with engine noise predominating at lower speeds. Electric cars will reduce engine noise. ...
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