Research released by the IAM has revealed that one in ten young male drivers has, at some point, driven a car while under the influence of cannabis. The shocking statistic comes just after the Government announced it hopes to introduce laws to make drug driving an easier offence to detect and punish. According to the IAM, figures calculated from the latest annual Think! Road Safety Survey show that 750,000 people have driven under the influence of cannabis, while 370,000 have driven while high on class A drugs.