The rules do not cover motor bikes or scooters. A vehicle only needs to make a noise if it is traveling under 19 kilometres per hour or when reversing.
There are no specifications on what the sound should be,
Citroen’s stubby, cube like concept the Ami-One plays a cheery tune, whereas Mercedes-Benz have commissioned the American Rock band Linkin Park to give its EVs a dose of rock.
Perhaps anything other than Greensleeves.