i don't disagree about the safety aspect, but there's no such thing as road tax. roads are funded through general taxation. some vehicles are subject to vehicle excise duty (VED), but many (like pedal bikes, historic vehicles more than 40 years old, and electric cars) are not. so would you make electric bikes subject to VED when electric cars aren't?
i don't disagree about the safety aspect, but there's no such thing as road tax. roads are funded through general taxation. some vehicles are subject to vehicle excise duty (VED), but many (like pedal bikes, historic vehicles more than 40 years old, and electric cars) are not. so would you make electric bikes subject to VED when electric cars aren't?