The main highways in shanghai are as follows:

The three national roads line 312(from shanghai to yi ning, xin jiang), line 318(from shanghai to zhangmu, tibet) and line 320 (from shanghai to ruili, yunnan) lead to the western part of china.

The national road 204(tongjiang, hei longjiang-san ya, hai nan) which passing shanghai goes through most of the beautiful cities along the coastline of eastern china.

The hu ning (a11 road), hu hang (a8 road), hu jialiu (a12 road), hu qingping (a9 road) connected the main cities around shanghai.

Kind reminder: so many long distance bus stations in shanghai help a lot for those who go to jiangsu, zhejiang areas and the bus tickets are available ahead of time within three days.