Crash- and Simulation-Based Safety Performance Evaluation of Freeway Rest Area

Kim, Hyeonseo; Kwon, Kyeongjoo; Park, Nuri; Park, Juneyoung; Abdel-Aty, Mohamed

doi:10.3390/su13094963

Cited by 3 publications

(2 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Kay questioned the deceleration parameters on the exit deceleration lane, and the relevant parameters were recalibrated by the measured data [27]. Kim [28] conducted a study to investigate the effect of speed change lane length on safety in service areas.…”

Section: Deceleration Lanementioning

confidence: 99%

Calculation Method of Deceleration Lane Length and Slope Based on Reliability Theory

Tian,

Shi,

Shao

et al. 2023

Sustainability

View full text Add to dashboard Cite

The deceleration lane is an important part of the freeway, and the rationality of its design parameters affects the exit accident rate. The traditional calculation method is based on the design of speed and vehicle parameters using deterministic methods, ignoring the randomness of the driver’s deceleration behavior. It is necessary to calculate the length and slope of the deceleration lane in detail according to the deceleration characteristics of the driver in the deceleration section by using the uncertainty method. This paper describes a study on the maximum longitudinal slope of the downhill section of the deceleration lane, where the safety of diverging vehicles is unfavorable. By collecting deceleration lane data from interchanges around Xi’an (Shaanxi Province, China, Coordinates: 108.95, 34.27) and analyzing the deceleration characteristics of vehicles, we propose a new deceleration model. In addition, the limit-state functions of the length and slope of the deceleration lane have been established based on the reliability theory. Finally, according to the deceleration characteristics, we determined the probability distribution of key parameters in the vehicle deceleration process. We used the Monte Carlo Simulation (MCS) and the Improved First-Order Second Moments (IFOSM) calculation model to calculate the length and slope of the deceleration lane, respectively. Finally, we propose the recommended values for the length and slope of the deceleration lane. The results of the study showed that: (1) The movement process of the vehicle on the deceleration section adopts a uniform deceleration, and the truck and the car start to decelerate from the starting of the taper section and diverging point, respectively. (2) The control vehicle in the deceleration lane calculation model is the compact car. (3) The reliability theory has good applicability in calculating freeway alignment indexes. It fully considers the probability of driver deceleration behavior in the calculation model, which provides a more suitable method for the calculation of deceleration lane indexes.

show abstract

Section: Deceleration Lanementioning

confidence: 99%

Calculation Method of Deceleration Lane Length and Slope Based on Reliability Theory

Tian,

Shi,

Shao

et al. 2023

Sustainability

View full text Add to dashboard Cite

show abstract

“…Optimization of traffic organization is also an important approach to improve the diverging areas’ capacity, including the advance arrangement of signs and dynamic management of vehicle paths [ 28 , 29 ]. Meanwhile, it seems that improving and upgrading road infrastructure is generally considered to be the critical solution [ 30 , 31 ].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Design Method for Highway Adjacent Tunnel and Exit Connection Section Length Based on Entropy Method

Liu

Pan

Zhang

et al. 2022

Entropy

View full text Add to dashboard Cite

With the continuous construction of transportation infrastructure, intersection nodes have been increasing rapidly, bringing growing numbers of tunnel- and exit-adjacent sections (TEAS) in mountain expressways in China. With the complex variation in the surrounding environment, drivers always face congestion and confusion on tunnel and the exit connecting sections (TECS) without adequate length, meanwhile excessively long TECS create detours. To better provide a sustainable design strategy for TEAS, based on a certain section of expressway in Shaanxi, China, this paper establishes a theoretical calculation model through analysis. The characteristics of traffic flow and drivers’ light adaptation at tunnel exit are obtained through data collection and driving tests, and the length requirements of the tunnel and exit connecting sections (TECS) are discussed. A VISSIM microscopic simulation model is also built under various design schemes and entropy-based multi-attribute decision making (EBMADM) is used to objectively calculate the weights of the four selected evaluation indexes. Then, the design schemes of the TECS with different lengths have been comprehensively evaluated. The results show the match between the evaluation results of EBMADM with theoretical calculations under existing traffic conditions, which proves the rationality of EBMADM in such problems. For more cases, the results of the EBMADM evaluation show a positive correlation between the length of TECS for the best performing design scheme with traffic volume and diverging ratio.

show abstract

Evaluation of Direct and Indirect Safety Effects of Speed-Limit Reduction on Urban Networks

Son

Park

et al. 2022

J. Transp. Eng., Part A: Systems

View full text Add to dashboard Cite

Crash- and Simulation-Based Safety Performance Evaluation of Freeway Rest Area

Cited by 3 publications

References 26 publications

Calculation Method of Deceleration Lane Length and Slope Based on Reliability Theory

Calculation Method of Deceleration Lane Length and Slope Based on Reliability Theory

Evaluation of Design Method for Highway Adjacent Tunnel and Exit Connection Section Length Based on Entropy Method

Evaluation of Direct and Indirect Safety Effects of Speed-Limit Reduction on Urban Networks

Contact Info

Product

Resources

About