Since the introduction of new laws in England and Wales last year, initial police force figures reveal a substantial increase in the number of drug-drive arrests.
The Government has released figures from Cheshire Police whose robust approach has resulted in an 800% increase in drug drive arrests, with more than 530 between March 2015 and January 2016, up from 70 in the previous year.
The change in the drug-drive law made it illegal to drive with 17 controlled drugs above a specified limit in the blood and it remains an offence to drive while impaired by any drug at any amount.
Motorists caught drug-driving face a criminal record, loss of their licence for at least a year and an unlimited fine.
The new legislation introduced a roadside swab test which checks for cannabis and cocaine. The law also covers additional testing at a police station.
Road safety minister Andrew Jones said: "Thanks to our tougher law, police are catching and convicting more dangerous drivers.
"The Government will continue to stand shoulder-to-shoulder with police as they work tirelessly to protect the public while recognising enforcement alone is not the answer."
A survey of more than 26,000 motorists conducted by the AA found 88% supported the clampdown against drug-drivers.
AA president Edmund King said: "Drug-driving is often the hidden killer on UK roads. We need to make it as anti-social as drink-driving. The new law and greater enforcement will help achieve this."
Under the old offence, 80% of suspects who were charged were then convicted. In comparison, 98% have been convicted under the new law.
Do you think last year's law has made a difference to drug-driving?