Analysis of work zone traffic operation and safety by using VISSIM microsimulation model | |
| Author | Kirati Yoosabai |
| Call Number | AIT Thesis no.TE-23-06 |
| Subject(s) | Road work zones--Thailand--Safety measures Road work zones--Thailand--Simulation methods |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Transportation Engineering |
| Publisher | Asian Institute of Technology |
| Abstract | This study aims to enhance traffic operation and safety within existing work zones by comparing their management with the guidelines outlined in the Manual on Uniform Traffic Control Devices (MUTCD) and Austroads Guide to Temporary Traffic Management (AGTTM). Field data from two sites, Rama II and Nakhon Ratchasima work zones, was collected to model traffic operations using VISSIM and assess safety using the Surrogate Safety Assessment Model (SSAM). The analysis reveals differences in work zone configurations, particularly in taper length and speed limit signage, impacting traffic performance and safety. Results indicate that AGTTM configurations generally outperform MUTCD in both traffic flow and safety, particularly in urban areas with lower vehicle speeds and proximity to intersections. Sensitivity analysis demonstrates that while speed limit installations can improve average speeds and reduce lane-change conflicts, they may increase rear-end conflicts, emphasizing the need for tailored approaches based on local conditions. Recommendations include aligning work zone configurations with AGTTM guidelines, considering exceptions for low-speed roads, and strategically placing speed limit signage to optimize traffic flow and minimize conflicts. Overall, this study underscores the importance of context-specific work zone management for improving traffic operations and safety. |
| Year | 2024 |
| Type | Thesis |
| School | School of Engineering and Technology |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Transportation Engineering (TE) |
| Chairperson(s) | Kunnawee Kanitpong |
| Examination Committee(s) | Vasin Kiattikomol;Punyaanek Srisurin |
| Scholarship Donor(s) | His Majesty the King’s Scholarships (Thailand) |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2024 |