简述高速公路B型端头的设计方法

Briefly Describing Design Procedured for Freeway B Type End

高速公路立交区、服务区、匝道与主线相交处B型端头的测量、设计方法。

The paper elucides measurements and design procedurs for B type end at freeway＇s grade separation area as well as service area intersection of ramp and maim route.