Is it supposed to charge for access to a city centre (as in London), all roads (Switzerland) or just the highwaynetwork (Germany)?
是对城市中心(英国)、还是对全部道路(瑞士)或者是高速公路(德国)收费？
2
Moreover, the highwaynetwork ensures convenient ways of getting to Leshan and reaching each of the scenic spots within Leshan and its environs.
快捷的公路系统不仅可以很方便地到乐山，还可以很方便地到达乐山周边的任何一个风景区。
3
The determination of the rational highway grade structure is one part of highwaynetwork planning, it also is an important content of highwaynetwork layout optimization.