This article is from the Model Rockets FAQ, by Wolfram von Kiparski with numerous contributions by others.
3. Regs: HPR is class H-O. G's now available. HPR launch sites require
certification by Transport Canada. HPR certification done by CAR.
This section is still under construction and currently has no Canadian editor
responsible for its contents. Most of the information contained in this
section was obtained from the CAR World Wide Web page and several issues
of High Power Rocketry magazine.