Plans for drug-driving law to be introduced
7 May 2012 Last updated at 09:16 BST
Drug-driving in England and Wales could become a specific offence, with a potential jail term and fine, under a new law expected in the Queen's Speech.
Under the plans, it will automatically be an offence to drive with certain controlled drugs in your body in excess of specified limits
Ben Ando reports
Joanna Bailey from road safety charity Brake