Engineering Commons^™

Application Of Driver Behavior And Comprehension To Dilemma Zone Definition And Evaluation, David S. Hurwitz

Open Access Dissertations

Among the most critical elements at signalized intersections are the design of vehicle detection equipment and the timing of change and clearance intervals. Improperly timed clearance intervals or improperly placed detection equipment can potentially place drivers in a Type I dilemma zone, where approaching motorists can neither proceed through the intersection before opposing traffic is released nor safely stop in advance of the stop bar. Type II dilemma zones are not necessarily tied to failures in design, but are more readily tied to difficulties in driver decision making associated with comprehension and behavior. The Type II dilemma zone issues become …

Developing An Evaluation Approach To Assess Large Scale Its Infrastructure Improvements: I-91 Project, Melissa Paciulli

Masters Theses 1911 - February 2014

Intelligent Transportation Systems (ITS) can include multiple technologies and applications combined to improve the overall efficiency and effectiveness of the transportation system or network. These applications are deployed with the anticipation that the desired project goals and objectives established by multiple stakeholders will be achieved. Once a system is deployed, the project goals and objectives should be evaluated. The evaluation can provide both quantitative and qualitative feedback to assess the impacts associated with the investment in building, designing and implementing these systems.

This research includes a methodology to evaluate large scale ITS infrastructure projects using the Interstate 91 (I-91) ITS …