Abstract
Setting reasonable speed limits is an efficient measure to improve the safety of freeways in mountainous areas. Twenty-five typical sections randomly selected from Xihan Freeway and Qinglian Freeway in China were investigated. On the basis of analyzing the data of 25 sections, speed distributions for cars and trucks under different speed limits were obtained. The correlation between operating speed and posted speed limit of mountainous freeways is analyzed. By means of regression analysis, the relationship model between the 85th percentile speed and posted speed limit, 50th percentile speed and posted speed limit, 15th percentile speed and posted speed limit are established respectively. The regression analysis of posted speed limits and operating speeds shows that there exists a strong linear relationship between these two speed concepts. The 15th percentile speed model is the best fitting model among the three.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
