dafa (09/17/82)
Circumferential interstate highways are assigned three digit route numbers. The last two digits are the same as the interstate route they connect to. But what is the significance of the first digit? David Fay ihuxu!dafa
spence (09/22/82)
#R:ihuxu:-11000:harpo:800015:000:92 harpo!spence Sep 22 15:20:00 1982 Don't even numbered routes run east-west and odd numbered routes North-South? harp!spence
ser (09/23/82)
#R:ihuxu:-11000:harpo:800017:000:236 harpo!ser Sep 23 08:53:00 1982 If I remember correctly, odd prefixes on three digit interstates indicate "spurs", i.e., routes into or out of major cities, while even prefixes indicate "circuits", i.e., routes around major cities. Steve Riegel harpo!ser