Almost anything can be a 172 infraction if the cop wants.Oh nice! I thought both were HTA172 infractions.
I don't do either...but I'd be jealous if I wasn't tempted (car or bike). On Tuesday while doing 0km/h I saw so many cars going on the shoulder I almost joined them.
Cops 1km up ahead and no one got caught / stopped for it.
If they want to be really annoying, they could use this section "outdistancing or attempting to outdistance one or more other motor vehicles while driving at a rate of speed that is a marked departure from the lawful rate of speed". Slow is a marked departure from lawful rate of speed.