Characterization of Longitudinal Acceleration at Curves in Urban Underground Ring Roads

To improve the safety at the curve of underground roads, the characteristics of velocity and acceleration of six curves were analyzed. The results show the following: (1) The radius of the curve is positively correlated with the mean value of acceleration and deceleration and the frequency difference. (2) The speed change in a single curve and curve with the same radius first reduces and then increases, while in the curve with inconsistent radius, the speed change decreases greatly and increases, then decreases slightly and increases. (3) Except for C3 (R = 30 m), there is a speed center point. When the speed is less than the point, acceleration and deceleration increase monotonically with the speed and decrease monotonically when it is greater than the absolute value of deceleration, which is consistent with the conclusion of acceleration. This study would be helpful to improve the safety of underground ring road curves.

• Record URL:
  • https://doi.org/10.1061/9780784485484.211
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9780784485484
• Supplemental Notes:
  • © 2024 American Society of Civil Engineers.
• Corporate Authors:

  American Society of Civil Engineers

  1801 Alexander Bell Drive
  Reston, VA  United States  20191-4400
• Authors:
  • Rao, Jiaqiang
  • Wang, Yanpeng
  • Zheng, Zhanji
  • Xu, Yuxuan
  • Xu, Jin
• Conference:
  • 24th COTA International Conference of Transportation Professionals
  • Location: Shenzhen , China
  • Date: 2024-7-23 to 2024-7-26
• Publication Date: 2024

Language

• English

Media Info

• Media Type: Web
• Pagination: pp 2235-2245
• Monograph Title: CICTP 2024: Resilient, Intelligent, Connected, and Low-Carbon Multimodal Transportation

Subject/Index Terms

• TRT Terms: Beltways; Highway curves; Mechanical acceleration; Traffic safety; Vehicular tunnels
• Subject Areas: Highways; Operations and Traffic Management; Safety and Human Factors;

Filing Info

• Accession Number: 01941313
• Record Type: Publication
• ISBN: 9780784485484
• Files: TRIS, ASCE
• Created Date: Dec 30 2024 9:58AM