Illegal drugs should always be avoided, but unfortunately a minority of people choose to break the law. Cannabis can lead to impaired concentration, slower reactions and paranoia. Cocaine can lead to increased aggression, increased risk taking and over confidence.

Rhys John-Howes, Chair of Road Safety Wales, said: “The effects of a drug may be relatively short-lived but they can remain in your system for many hours after you have used them - some drugs can stay in the body for several days. Even when the drug feels like it has worn off, it can still be detected in your system - in saliva, blood or urine - for a longer period of time.

“Driving after using drugs is unacceptable and puts all road users at risk.”

Superintendent Jolene Mann, Head of Specialist Operations, Dyfed Powys Police, said: “Every year, drug drivers are involved in serious and fatal collisions in Wales. Most people don’t think it will happen to them, but drugs and driving are a deadly combination, even if you believe you are fine to drive or haven’t been involved in a collision when driving under-the-influence on a previous occasion.

“Through Operation Revoke, in conjunction with the DVLA, we are targeting drivers who use drugs and ensuring their driving licences are revoked.”

Throughout the festive period, the national #OpLimit campaign will see police forces using local knowledge of hotspots to identify people who are driving under the influence of drugs or alcohol.

Drink and drug driving is selfish and inexcusable. If you have consumed alcohol or used drugs, don’t drive or ride.

If you are a drug user, or have concerns about someone else’s drug use, engaging in a conversation about it can feel tough, but support is available. The Wales Drug & Alcohol Helpline (DAN 24/7) is available to people who live in Wales and is open 24 hours a day, 365 days of the year. For a confidential chat or advice on accessing local and regional services, call: 0808 808 2234.