- E" Q- D- W9 ~1 _2 Y% F: hA 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. * G5 J+ P7 ]6 t. j6 ^ " e) g; \, p9 |0 A" @! W/ o# a是否只要换证即可?