Road tolls to use the Toronto expressways might well lead to a series of other charges against drivers such as a congestion tax and a nightmarish concept called “cordon tolls” These would apply as drivers try to avoid the expressway charges by using local roads. The linked CBC story quotes Matti Siemiatycki, an associate professor with the Department of Geography and Planning at the University of Toronto, as saying such movement could be stopped or diminished by cordon tolls charged when drivers cross a boundary. Yikes.