In the Canada Air Pilot Instrument Procedures it depends on the airport for Noise Abatement on visual approaches, some have restrictions some don't. Toronto Pearson is 3000' whereas Ottawa is 2500'. Some airports have no restriction. At Pearson it is required to intercept the final approach course at or outside the FAF and remain on or above the glide slope or the assumed 3 degree glide slope. Ottawa is similar for the intercept of the final approach course and glide slope.
At least that is what my outdated CAP states....
Bug