That’s the results of the latest poll by road safety charity the Institute of Advanced Motorists (IAM) following the Government's announcement earlier this year that a drug-driving bill will be introduced and will include chemicals that can be found in prescription drugs.

As well as showing that drivers think that a traffic light system would be the best method to show which prescription drugs are safe to use whilst driving, the survey also showed that the vast majority of drivers have no sympathy for those who drive under the influence of drugs. A total of 73% of drivers think that those who drive whilst under the influence of illegal drugs are as dangerous as drunk drivers. And 80% of respondents agree with the view that a zero limit should be set for the worst illegal drugs.

Motorists feel that penalties are not harsh enough for drug-drivers. Currently, if prosecuted, they face a one-year ban and up to £1,000 fine. A total of 59% of respondents feel that this is not strong enough.

IAM chief executive Simon Best said: ‘Motorists clearly feel that labelling is not clear or consistent enough when giving information on driving when taking medications. A traffic-light system such as red for no driving, amber for care required and green for limited effects appears to be the most popular option. What is clear is that we will need a wide ranging information campaign to support the new laws and ensure motorists don’t find themselves on the wrong side of the law.’