Article
Transportation
Muhammad Tahmidul Haq, Amirarsalan Mehrara Molan, Khaled Ksaibati
Summary: This study advances the research on the new super diverging diamond interchange design by evaluating the safety performance of its two versions. The findings suggest that super DDI designs have a high potential in improving traffic safety compared to traditional DDI designs.
JOURNAL OF TRANSPORTATION SAFETY & SECURITY
(2023)
Article
Ergonomics
Maria G. Oikonomou, Apostolos Ziakopoulos, Amna Chaudhry, Pete Thomas, George Yannis
Summary: This study proposes a safety evaluation approach for estimating crash rate of Connected and Autonomous Vehicles (CAVs) through microsimulation. Different scenarios were simulated to model different market penetration rates (MPRs) and generations of CAVs. The results show that higher CAV MPRs lead to significantly lower crash rates, and rear-end conflicts involving 2nd generation CAVs have the lowest crash rates, while lane change conflicts have the highest crash rates.
ACCIDENT ANALYSIS AND PREVENTION
(2023)
Article
Engineering, Civil
Darren J. Torbic, Daniel Cook, Joseph Grotheer, Richard Porter, Jeffrey Gooch, Kristin Kersavage
Summary: The research aimed to develop new intersection crash prediction models for the second edition of the Highway Safety Manual, focusing on intersection configurations and traffic control types not currently covered in HSM Part C.
TRANSPORTATION RESEARCH RECORD
(2022)
Review
Ergonomics
Ashutosh Arun, Md Mazharul Haque, Ashish Bhaskar, Simon Washington, Tarek Sayed
Summary: The traditional reliance on police-reported crash data for road safety assessment has limitations, leading to the need for a unified framework to integrate surrogate safety assessment methodologies and conflict measures in order to better understand road user risk. (Word count: 331)
ACCIDENT ANALYSIS AND PREVENTION
(2021)
Article
Transportation
Karan Arora, Lina Kattan
Summary: This research introduces a novel intelligent transportation system control strategy, which delays and avoids traffic congestion through the dynamic use of Model Predictive Control (MPC) based Variable Speed Limit (VSL) and Hard Shoulder Running (HSR), achieving significant results.
JOURNAL OF INTELLIGENT TRANSPORTATION SYSTEMS
(2023)
Article
Ergonomics
Anik Das, Mohamed M. Ahmed
Summary: This study presents a novel approach to update and adjust lane change model parameters for the development of realistic microsimulation models in different weather conditions. The results indicate that adverse weather leads to increased simulated conflicts, lower average speeds, and higher total travel times and delays.
JOURNAL OF SAFETY RESEARCH
(2022)
Article
Engineering, Civil
Xuesong Wang, Zhicheng Dai, Yao T. Hsu, Siyi Zheng
Summary: This study investigated the safety impact of intersection spacing and network connection compatibility along 19 major arterials in Suzhou, China. The results showed the existence of unobserved heterogeneities among the selected arterials, and the density, deviation, and variation of intersection spacing were found to have different effects on crash frequency. The study also identified the importance of hierarchical differences in road connections for crash prevention. Rating: 8 out of 10.
TRANSPORTATION RESEARCH RECORD
(2023)
Article
Ergonomics
Deep Patel, Parisa Hosseini, Mohammad Jalayer
Summary: In recent years, the identification of road users' behavior and conflicts at intersections has become increasingly important for evaluating traffic safety. This study developed an innovative AI-based video analytic tool to assess intersection safety. By collecting high-resolution video data and capturing non-compliance behaviors, the researchers successfully extracted trajectory data and estimated the number of crashes at each intersection using extreme value theory. Finally, the intersections were ranked based on the calculated scores, providing valuable information for engineers and policymakers.
ACCIDENT ANALYSIS AND PREVENTION
(2023)
Proceedings Paper
Computer Science, Artificial Intelligence
Jie Yang, Tangyi Guo, Yaxin Chen
Summary: This study focuses on the Zhongshanmen Street-Southern Polytechnic Intersection and investigates the operation efficiency and safety status using microscopic simulation technology and traffic conflict technology. A VISSIM micro-simulation model is established for conflict simulation and SSAM software is used for analyzing the simulation conflicts and verifying the rationality of the optimization scheme. The simulation results demonstrate an improvement in the intersection's road service level from C to B, and an increase in TTC from 0.29 to 0.58.
INTERNATIONAL CONFERENCE ON INTELLIGENT TRAFFIC SYSTEMS AND SMART CITY (ITSSC 2021)
(2022)
Article
Transportation
Mutasem Alzoubaidi, Milan Zlatkovic
Summary: This study proposes a new innovative interchange design called the continuous green T-partial cloverleaf A (CGT-parclo A) and compares it with other conventional and unconventional service interchange designs. The findings indicate that the CGT-parclo A is the best form of parclo A interchanges and has the potential to reduce the likelihood and severity of traffic crashes.
JOURNAL OF TRANSPORTATION SAFETY & SECURITY
(2023)
Article
Engineering, Civil
Mahdi Rajabi, Patrick Gerard, Jennifer Ogle
Summary: Crash frequency is an important safety measure, and the Highway Safety Manual provides predictive models for estimating crash frequency on specific road segments and intersections. A common challenge in the calibration process is determining the required sample size for a specific level of precision, with this study proposing an equation to estimate sample size based on coefficient of variation of the calibration factor and observed crashes.
TRANSPORTATION RESEARCH RECORD
(2022)
Article
Engineering, Civil
Lalita Thakali, Liping Fu, Shahram Heydari
Summary: This paper introduces a new approach for allocating federal resources and identifying upgrading projects for improving the safety of at-grade crossings in Canada, which combines risk-based network screening and mathematical programming to optimize resource allocation and maximize return on investment. A case study from the Canadian crossing network demonstrates the application of this approach.
CANADIAN JOURNAL OF CIVIL ENGINEERING
(2021)
Review
Public, Environmental & Occupational Health
Lai Zheng, Tarek Sayed, Fred Mannering
Summary: The limitations of crash data and crash-based methods have led to the study of alternate safety measures like traffic conflicts. These alternative measures are expected to have a significant impact on road safety analysis in the era of connected and autonomous vehicles, requiring further research efforts to improve the modeling of traffic conflicts.
ANALYTIC METHODS IN ACCIDENT RESEARCH
(2021)
Article
Green & Sustainable Science & Technology
Mostafa Sharafeldin, Omar Albatayneh, Ahmed Farid, Khaled Ksaibati
Summary: This study analyzed nine years of intersection crash data in Wyoming and identified pavement surface friction, use of safety restraints, intersection type, reckless driving, and crash type as the major contributing factors to crash injury severity. Higher pavement surface friction levels and proper use of restraints were found to reduce the likelihood of severe injury. Countermeasures such as pavement friction requirements, driver's education, and traffic law enforcement may be proposed to mitigate injury severity concerns at intersections.
Article
Ergonomics
Yu Song, Madhav V. Chitturi, David A. Noyce
Summary: This paper presents a test scenario specification procedure using crash sequence analysis and Bayesian network modeling. It demonstrates how crash sequences can be encoded and categorized into different types, and how a Bayesian network model can be used to analyze the relationships between crash sequence types, crash outcomes, human factors, and environmental conditions.
ACCIDENT ANALYSIS AND PREVENTION
(2022)