Leonardo asked in USMA 9104: >A question : how many cities in the world do use the metric numbering, >that is the door number is not prograssive, but reprensent a rounded (ever >rigth, odd left) measure of the distance in meter from the beginning of >the road. >I have seen on some very long road in Roma and Lucca , so one can gnow at >glance where the place is, but i would like if there are other town around >the >world that have this use, possibly more generalized to all roads. Edmonton, Alberta, has a layout inspired by Cartesian geometry. Street are laid out in a regular grid and are numbered consecutively. Streets running east and west are called avenues. The center of the city is at the interssection 100th Street and 100th Avenue. The origin of the grid is south-east of the city. The first two or three digits of an address on a street are the number of the avenue immediately south of it. The first two or three digits of an avenue address are the number of the street immediately east of it. The last two digits of an address indicate position along the block, odd numbers on one side, even numbers on the orther side. There are some extra streets because the deep valley of the North Saskatchewan River runs through the city. Some from older cities such as London may object that Edmonton wastes numbers. I can only reply that numbers are cheap.
