The information of centerlines can not cover the changes of lanes, and the two-dimensional model is also inadequate in the expression of three-dimensional transportation networks.

目前，基于路段中心线的二维道路网络模型已经普遍存在，但其在几何特征及拓扑关系表达等方面都难以满足复杂交通系统的需求。

youdao

Because we know we can't build our economic future on the transportation and information networks of the past, we are remaking the American landscape with the largest new investment in our nation's infrastructure since Eisenhower built an interstate highway system in the 1950s.

CNN: Obama's remarks on signing the stimulus plan

Somewhere along the line, somebody built the information and transportation networks that have helped my business grow.

WHITEHOUSE: President Obama on the American Jobs Act in Scranton, Pennsylvania | The White House

It means investing in transportation and communications networks that move goods and information as fast as possible.

WHITEHOUSE: President Obama on the National Wireless Initiative