Even with a prescription, EV drivers must stay under the 2mcg/L THC limit. A...

https://blogfreely.net/neasalnfbo/h1-b-can-adas-features-make-it-safer-to-drive-on-prescribed-cannabis-the

Even with a prescription, EV drivers must stay under the 2mcg/L THC limit. A medical defence exists, but DVLA rules remain key. Being prescribed cannabis is legal, but it doesn't excuse impairment. Legality doesn't replace personal responsibility.