UK EV drivers using medical cannabis should know that even when parked and...

https://quebeck-wiki.win/index.php/Is_Exceeding_the_THC_Limit_an_Offence_Even_If_I_Drive_Perfectly%3F

UK EV drivers using medical cannabis should know that even when parked and charging, ‘in charge’ laws apply. The legal THC limit is just 2 micrograms per litre of blood