Traffic safety evaluation of mixed traffic flow considering the maximum platoon size of connected automated vehicles

Yangsheng Jiang, Tingting Ren, Yuqin Ma, Yunxia Wu and Zhihong Yao

Physica A: Statistical Mechanics and its Applications, 2023, vol. 612, issue C

Abstract: In this paper, we investigate the influence of the maximum platoon size of connected automated vehicles (CAVs) on the traffic safety of traffic flow mixed with human-driven vehicles (HDVs) and CAVs. First, the spatial distributions of vehicles within the mixed traffic flow are analyzed. On this basis, the car-following characteristics of different vehicles are obtained. Second, the distribution probability of the four car-following modes in mixed traffic flow is derived based on the maximum platoon size of CAVs. Then, the intelligent driver model (IDM), gap-regulating model, cooperative adaptive cruise control (CACC) model, and adaptive cruise control (ACC) model are used to capture the four different car-following modes, respectively. Finally, multiple safety measures, such as the coefficient of variation of the vehicle speed, time exposed time-to-collision (TET), and time-integrated time-to-collision (TIT), are adopted to evaluate the safety of mixed traffic flow. Moreover, the impact of platoon size on the safety of mixed traffic flows is evaluated based on a numerical simulation. The results demonstrate that the magnitude of the impact of the platoon size of CAVs on the safety of mixed traffic flow is related to the penetration rate of CAVs.

Keywords: Traffic safety; Platoon size; Penetration rate; Connected automated vehicles (CAVs); Car-following model (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (18)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0378437123000079
Full text for ScienceDirect subscribers only. Journal offers the option of making the article available online on Science direct for a fee of $3,000

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:612:y:2023:i:c:s0378437123000079

DOI: 10.1016/j.physa.2023.128452

Access Statistics for this article

Physica A: Statistical Mechanics and its Applications is currently edited by K. A. Dawson, J. O. Indekeu, H.E. Stanley and C. Tsallis

More articles in Physica A: Statistical Mechanics and its Applications from Elsevier
Bibliographic data for series maintained by Catherine Liu ().