二级公路线形设计一致性评价研究

公路线形设计一致性水平是衡量道路交通安全的一个重要标准,目前对低等级公路的研究较为薄弱.在国内外公路线形设计一致性研究的基础上,基于汽车加速度,分别建立了与二级公路相适应的小客车和货车运行车速预测模型,并进一步研究采用加/减速度作为反映影响公路安全的线形设计一致性评价指标.最后选取某二级公路实际调查路段验证了模型的合理性和有效性.

Consistency Evaluation of Alignment Design for Secondary Highway

The level of alignment consistency is an important standard to measure highway traffic safety. However, the current research is weak in low-grade highway. Based on the research of alignments consistency home and abroad, the operating speed forecast models that are well-adapted to secondary highway are proposed. The models are separately for car and truck with the use of vehicle acceleration. Besides, the vehicle acceleration is also used as the evaluation criterion of highway alignments consistency. Finally, the use in one secondary highway proves the adaptability and validity of the models.