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.

Liu Xu's Thesis Defence

Liu Xu finished her Master's thesis defence on May 3rd, 2016. The thesis title is “Development of planning and evaluation models for Superstreet".

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's Dissertation

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”.

Dilemma Zone

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.

Real-time Control

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.

UAID

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's Dissertation

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”


Welcome

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.

3_Allpication tools              1_safety             2_control&operation

Control & Operation            Safety                Application Tools


Recent Presentations and Activities

h1

A Tour Guide to ATTAP

UIDS

Publications and Presentations Related to UIDS

drone

The application of Drone

h3

ATTAP Quarterly Newsletter (Oct.-Dec. 2015)

h3

Integrated Variable Speed Limit Control to Minimize Recurrent Highway Congestions

h4

An Integrated Signal Control System to Mitigate Queue Spillback on Freeway Off-ramps

h5

Introduction to Unconventional Intersection/Interchange Design in Maryland

h7

Eastern-Shore Regional Traffic and Incident Monitoring and Management System

h7

Introduction to Dilemma Zone Protection System

h8

An Integrated Multi-modal Emergency Evacuation System for the Baltimore Metropolitan area - New

MIDCAP_MUID_09232014~2.0

Introduction to MIDCAP and MUID

2nd-DZ protection system US 40 and MD 910C

Design of a Dilemma Zone Protection System