Question to the Department for Transport:

To ask the Secretary of State for Transport, if he will provide clearer guidance and standardisation for flashing bike lights.

Standards for the fitment and use of bike lights are set out in the Road Vehicles Lighting Regulations 1989 as amended.

Front and rear flashing lights are permitted on bicycles provided they do not cause undue dazzle or discomfort to other road users, have a constant flashing frequency of 1 to 4hz and, if they are the only lights fitted, an intensity of not less than four candelas.