I live in Edmonton, AB, and it somewhat follows a grid system. Although, a bunch of newer nieghborhoods have not continued to follow it. The roads all have numbers in a predictable pattern. This is very helpful for navigation, as just giving someone an address means they will probably be able to find it without consulting a map. Named streets automatically imply that I cannot find an address at all without a map. You can't even find out which general direction would be correct.