This paper presents a new design philosophy on acceleration lane that the traffic volumes on main line of expressway and on ramp are considered in the computation of the acceleration lane length.
The length design of the acceleration lane depends on not only traffic speed but also traffic volume of the main line and ramp of expressway interchanges.
高速公路加速车道的设置长度不仅取决于主路及匝道的设计速度，还与主路及匝道的交通量有关。
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This bridge is all constructed now according to the expressway standard. The bridge deck is designed by the double-way 6-lane and the double-line rail traffic space is remained.