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”
ATTAP is jointly initiated by the Office of Traffic and Safety at the Maryland State Highway Administration and the Center for Traffic Safety and Operations at the University of Maryland, College Park.
State Highway Administrator, MDSHA Doug Simmons
Deputy Administrator, MDSHA David Coyne
Deputy Administrator, MDSHA Cedric Ward
Director, OOTS, MDSHA Eric Tabacek
Deputy Director, OOTS, MDSHA Michael Zezeski
Director, Office of CHART and ITS
Development, MDSHA Allison Hardt
Deputy Director, Office of Policy and Research, MDSHA Steve Rochon
Chief, TDSD Division, MDSHA