Legal doesn’t mean safe. For EV drivers on medical cannabis, the 2mcg/L THC...

https://bizzmarkblog.com/the-motorists-guide-to-medical-cannabis-dvla-rules-section-5a-and-staying-legal/

Legal doesn’t mean safe. For EV drivers on medical cannabis, the 2mcg/L THC limit is strict. A medical defence exists, but it doesn’t bypass DVLA fitness-to-drive rules