The only toll road in Toronto is one outside the city called the 407 great for driving around the city if you need to get somewhere faster as it is curved. It also has a transponder.
My cousin has an ez pass but has the liscense plate one which also seems to block police radar from working properly almost like a jammer. the windsheild one has problems with the tinting and also acts up on navagation systems. Which is why it is no longer easily available unless you have a predetermined car,usually a luxury one.
This is atleast what i have been told by my cousin in edison New Jersey.