5 C4 u( ? H# ]0 \1 UA valid licence from another Canadian jurisdiction can be exchanged for and equivalent class (Classes 1 through 7). Testing is not normally required, but medical and vision requirements must be met. A medical and proof of vision screening is required for Class 1, 2 and 4 and may be required for all other classes if applicant has a medical condition that may affect their ability to safely operate a motor vehicle. # D: d. B2 z% _4 Q& s8 g, X % e& S' f: z! p是否只要换证即可?