Yen-Yu Chen has finished and received his Ph.D. degree. His dissertation topic is An integrated real-time interchange control system.
Presentations at 2020 TRB Annual Meeting
At 2020 TRB 99th Annual Meeting, several papers authored by ATTAP members are presented. The topics include traffic signal optimization and transit signal priority.
Presentations at 2019 TRB Annual Meeting
At 2019 TRB Annual Meeting, five papers authored by ATTAP members are presented. The topics include traffic signal optimization, traffic safety analysis at an intersection, and incident duration estimation.
Lectern presentation on TRB 2018
Hyeonmi Kim made a lectern presentation about an arterial-based transit signal priority control system on TRB's 97th Annual Meeting, January 7-11, 2018, in Washington, D.C. The system consists of a pre-timed bus-based progression model and a real-time TSP model.
Dilemma Zone Protection System
ATTAP analyzed field data collected from one of the intersections with dilemma zone protection system(DZPS). The analysis focused on short-term impacts on driving behaviors. The evaluation results also showed that the DZPS provide 100 detection rate to red light running vehicle.
Presentation at The Hong Kong University
Dr. Gang-Len Chang gave a distinguished lecture on the subject of contending with urban traffic congestion at The University of Hong Kong in December 2015.
Phase-III contract offered
Baltimore Evacuation System
When emergency events occur in the urban area, people in the impact zone must be evacuated to the safe locations as soon as possible. An off-line system and an online system are developed for different agencies
I-270 Traffic Analysis
With field studies on I-270 during morning and evening peak hours, our members identified most congested bottlenecks and figured out some potential strategies that will contribute improving traffic conditions.
Xianfeng Yang finished and received his Ph.D. degree. The dissertation title is “Integrating of Arterial Signal and Freeway Off-ramp Controls for Commuting Corridors”.
The dilemma zone refers to the area where drivers experience difficulty with stop/go decision making when presented a yellow indication. An all-red extension system is developed to protect vehicles in such scenarios.
To mitigate the congestion and queue spillback near off-ramps, we developed a real-time control system which consists of three primary stages, including data collection, data analysis, and signal priority control.
ATTAP, being one of leaders in unconventional intersection designs, developed a series of methods and tools to boost the application and improvement of such strategies.
Variable Speed Limit
Dynamically adjusting the speed limits can help smooth the speed transition between the upstream free-flow and downstream congested traffic states, thereby preventing the sudden speed drop and the formation of an excessive queues.
Traffic and Incident Management
Evacuating the travelers in case of extreme climate conditions is a serious challenge. A Traffic and Incident Monitoring and Management System is developed to encounter this issue.
Woon Kim finished and received her Ph.D. degree. The thesis title is “Development of a Traffic Incident Management System for Contending with Non-concurrent Highway Congestion”
Drone as a Tool for Traffic Enfineering
This presentation demonstrates the potential use of the drone in the aspect of traffic management, as well as comprehensively proposes both hardware and software which supports the drone operation.
ATTAP is jointly initiated by the Office of Traffic and Safety (OOTS) at the Maryland Department of Transportation State Highway Administration (MDOT SHA) and the Center for Traffic Safety and Operations at the University of Maryland, College Park (UMCP).
Administrator, MDOT SHA Cedric Ward
Director, OOTS, MDOT SHA Joseph Sagal
Acting Deputy Administrator of Operations in Hanover, MDOT SHA Allison Hardt
Deputy Director, Office of Policy and Research, MDOT SHA Steve Rochon
Chief, Traffic Development and Support Division, MDOT SHA