Speed bumps

You know those huge bumps on the 401 or any 400 series highways, that run across all four lanes? When you go over them your arse flys off the seat? Ive always wondered what they are - anyone know ? Or how we complain to get rid of them?
There used to be one on the 401 going EB in the express right after DVP or there's 2 on the 401 express EB @ bayview

When I'm cruising along they catch me off guard & toss me off my seat - especially if I'm cruising along with one hand.

lol yea those are fun:D I try to keep my eye out for those and prep for them. Flying off my seat once at highway speeds was enough.