Reading the Quebec Highway Safety Code from start to finish should tell you everything you need to know with regards to the operation of a modified bicycle in Quebec.
CanLII - Highway Safety Code, R.S.Q. c. C-24.2
Good luck and be sure to post what you figure out for the sake of others from Quebec
CanLII - Highway Safety Code, R.S.Q. c. C-24.2
Good luck and be sure to post what you figure out for the sake of others from Quebec