Intelligent dilemma zone protection system at high-speed intersections : final report.

Park, Sung Yoon; Chang, Gang-Len

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Intelligent dilemma zone protection system at high-speed intersections : final report.

2017-07-01
By Park, Sung Yoon ; Chang, Gang-Len

File Language:

English

Details

Creators:

Park, Sung Yoon ; Chang, Gang-Len
Corporate Creators:

University of Maryland (College Park, Md.). Dept. of Civil and Environmental Engineering
Corporate Contributors:

Maryland. State Highway Administration. Office of Policy & Research
Subject/TRT Terms:
Publication/ Report Number:

MD-17-SHA/UM/3-32
Resource Type:

Tech Report
Geographical Coverage:

United States ; Maryland
Corporate Publisher:

Maryland. State Highway Administration. Office of Policy & Research
Abstract:

Drivers’ actions in an intersection’s dilemma zone – the area where the decision to stop at a yellow light or continue through it is not clear-cut – can lead to side-angle and rear-end crashes. In Maryland, researchers developed an intelligent dilemma zone protection system (DZPS) that is reducing these crashes by anticipating drivers’ decisions and responding. The DPZS system was deployed at two high-speed rural intersections (US 40@Western Maryland Parkway and MD 213@Williams/Locust Point Road), and it has three components: (1) two wide-range sensors to track the speeds and locations of all vehicles within the identified dilemma zones; (2) software to predict the response of drivers during the yellow phase and to activate the all-red extension function if needed; and (3) a web-based module for responsible engineers/technicians to monitor the system’s performance from a control center. Measured benefits of DZPS include a 30 to 40 percent reduction in dilemma zone length and fewer vehicles approaching the intersection at speeds greater than the posted speed limit. The all-red extensions have helped prevent crashes between through traffic and vehicles entering the intersection from the cross street.
Format:

PDF
Funding:

SP409B4K
Download URL:

https://rosap.ntl.bts.gov/view/dot/32543/dot_32543_DS1.pdf
File Type:

[PDF - 4.46 MB]
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha256:84f26f9cb30bd60f80e5c83dcd466529425f507e81468699fa6f50392a6fbe29

File Language:

English

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