PEOPLE who use prescription medication will be reminded to ensure it does not impair their ability to drive, as a move to crack down on drug-driving is considered by MSPs.

The proposals would see legislation introduced that would make it an offence to drive while above specified drug limits. Existing law makes it an offence to be in charge of a motor vehicle while unfit to drive through drink or drugs but the penalties (minimum 12-month driving ban, up to six months in prison and a fine of up to £5000) are reserved to Westminster.

The new offence would operate alongside the current offence and carry with it the same maximum penalties. It would also place a zero-tolerance limit on eight drugs most associated with illegal use, including cannabis, heroin and cocaine

There are currently no prescribed limits for controlled drugs, although the ability to provide specified limits for drugs is devolved.

Several drugs with medical uses will have limits based on impairment which includes: clonazepam, diazepam, flunitrazepam, lorazepam, methadone, morphine, oxazepam and temazepam.

A separate approach will be taken to amphetamine, balancing its legitimate use for medical purposes against its abuse.

Any person taking medication in line with their prescription can claim the medical defence to the new offence.

SNP MP Ash Denham said: “Obviously those that are on prescription medications would be able to rely on the medical defence as long as they comply with the instructions given to them by their medical professional.”