Traffic Issues and its Strategies in the View of Spatial Expansion in the Central Area of Lanzhou City

The Lanzhou City construction space and transportation network have obviously changed. Lanzhou city’s terrain is that the Yellow River crossing two mountains caused the valley very long and narrow. So with the subsequent traffic congestion, effective measures should be taken to expand city spaces and to improve traffic network. Only with this, Lanzhou City could be developed fast and shape a unique city identity. Through analysis of the city topographic features and spatial layout, this paper outlines several ideas on city planning of Lanzhou.