Question to the Department for Transport:

To ask the Secretary of State for Transport, what assessment he has made of the potential merits of introducing a minimum level of brightness car lights must have when driving at night.

This is already the case. Before cars can be sold or registered in the UK, they must demonstrate that the lighting system meets a range of lighting system performance requirements. Lamps must also be maintained throughout the life of the vehicle - which is checked at each MoT.