在日本,即便东京这样的大城市里,最繁忙的主干道也不过是双向6车道.城市与城市之间的国道多为双向4车道。不仅道路不宽,过街天桥和地下通道也不多见,行人通常可直接穿越马路。尽管如此.日本的道路通畅率很高.其中的奥秘在于交通需求管理。日本国土交通省道路局企划科的隅藏介绍说.日本 In Japan, even the largest cities such as Tokyo, the busiest arterial road is no more than a two-way, six-lane road that has four-way national lanes between cities and cities. Not only the roads are not wide, overpasses and underpasses are rare, and pedestrians can usually cross the road directly. Nonetheless, the road to Japan is high, with the secret of traffic demand management. Japan’s Ministry of Land, Infrastructure and Transport Provincial Highway Bureau Planning Section of the introduction that Japan