In connection with the situation in different period and cases on different stages of highway construction and operation, the research enriched the content and methods of public participation.

针对公路建设和运营不同时期、不同阶段的具体情况，丰富了公众参与的内容，完善了公众参与的方法。

youdao

The State of California, Department of Transportation (Caltrans) is responsible for the design, construction, maintenance, and operation of the California State Highway System, as well as that portion of the Interstate Highway System within the state's boundaries.

ENGADGET: IBM shows off Smarter Traveler traffic prediction tool