Prescribed cannabis is legal, but road safety rules still apply. You must stay...

https://lukasiwad089.theburnward.com/adas-explained-why-your-car-isn-t-a-self-driving-chauffeur-and-why-you-need-to-stay-legal

Prescribed cannabis is legal, but road safety rules still apply. You must stay under the 2mcg/L THC limit and meet DVLA fitness standards. A medical defence exists, but it’s not a safety net