At French School Confidential: A comparison of Montreal and Toronto bus transfers.

I would only add that the main difference between the two is that Montreal transfers are designed to be read by machine (and bus drivers who understand their codes), while Toronto transfers are designed to be read by people.

I’ve always liked our punch-card transfer system. It just works, and has so far resisted modernization efforts that have changed just about everything from mechanical to electronic: Parking meters, thermostats, car windows/ignition/steering/locks, radio tuners… How long before the transfer goes too?