Transportation and spatial structure
Salt The interstate highway system
(รูป)
Fig 1.6salt lake city and the proposed interstate high way system. The high relative accessibility of salt lake city among western cites may be observed from its position in the proposed interstate high system
Gateways-ocean routes converge on the port and land route fan out from it. The idea of a gateway is much less clear-cut, however, if one is considering inland traffic patterns, where a variety of criteria might de
(รูป)
Fig.1.7 rail gateways: Chicago: Chicago serves as a rail gateway in the sense that one set of railroads connects it to the east, and with only a few exceptions an entirely different set connects it to the West .
Employed. The term gateway might be attached to cities located in transitional zones between major regions, or to cities where routes fan out on one side and are concentrated on the other, or to cities where there is a break-of-bulk change of carrier or break in the freight rate structure