New drug drive law comes into force today (02/03). New drug drive law will come into force in England and Wales on Monday 2nd March 2015. The new law is designed to catch people who risk other people’s lives by getting behind the wheel after taking drugs, and not those taking legitimate medicines that don’t impair their ability to drive. THINK!, which provides road safety information for road users, is encouraging people who take medicines and aren’t sure if they are safe to drive to check with