国土空间规划背景下的交通线性工程破局路径探讨

重点分析了交通线性工程与永久基本农田、生态保护红线三者之间的关系,通过实例阐明,在既有规划体系下三者之间的矛盾冲突十分严重,交通线性工程建设受到极大的制约。虽然目前有大量的实践试图冲破矛盾枷锁,但都难以从根本上解决问题,非国家级、省级交通线性工程建设仍然困难重重。为解决此类矛盾冲突,建议在国土空间规划窗口期优化线性网络,理清重点项目并深入研究至详细规划深度;建立起针对市级交通线性工程的永久基本农田占用调配机制;尽快明确交通线性工程无害化穿越生态保护红线的管控细则。

Study on Performances of Car-following Models Induced by Motions of a Leading Car

This paper investigated the performances of a well-known car-following model with numerical simulations in describing the deceleration process induced by the motion of a leading car. A leading car with a pre-specilied speed profile was used to test the above model. The results show that this model is to some extent deficient in performing the process aforementioned. Modifications of the model to overcome these deficiencies were demonstrated anda modified car-following model was proposed accordingly. Furthermore, the delay time of car motion of the new model were studied.