Usually that depends on the power of the engine. Low-powered "support" engines are usually not covered by law and are free to use, but if you stick something like a scooter engine in there it's another issue.
yes
no dirt bikes arn't illegal
pocket bikes are not illegal on streets.
pocket bikes are NOT illegal in Canada but i don't know the laws about driving them
no
In most places, it is illegal for bikes to ride on the sidewalk. Cyclists are usually required to ride on the road or in designated bike lanes.
In most places, it is illegal to ride bikes on the sidewalk. Cyclists are usually required to ride on the road or in designated bike lanes.
Driving barefoot or without shoes in the state of Iowa is not illegal. However it is not recommended since it can be unsafe.
No - it's illegal
No
No, it is not illegal.
No