Surely they could build a tranquiliser gun which fires a dart instead of a bullet . Works on big game in Africa, so why not in town centers where machette weilding nut jobs in motorcycle helmets feel thay are above the law.
I dont know, but would a taser work through many layers of outer clothing alot of moped crims seem to wear , also the distance for deployment has to be alot nearer than a dart in a rifle.
Even if you miss , its significantlty less likely to injure / kill a passer by , although everyone ( in the vids online ) retreats to a safe distance anyway. It has to be safer than a bullet doing 9000ft per second and going through and through .
I think the public might be surprised by the number of ARV teams that are / were( pre – cuts) available to the Met , my friend used to crew one , an unmarked Volvo V70 . I cant ask him directly anymore unfortunaly.