Safe Intersection Crossing for Pedestrians With Disabilities

Smith, Stephen F.; Rubinstein, Zachary B.

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Safe Intersection Crossing for Pedestrians With Disabilities

2021-11-01
By Smith, Stephen F. ; Rubinstein, Zachary B.

File Language:

English

Details

Creators:

Smith, Stephen F. ; Rubinstein, Zachary B.
Corporate Creators:

Mobility21, Carnegie Mellon University
Corporate Contributors:

United States. Department of Transportation. University Transportation Centers (UTC) Program ; United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology
Subject/TRT Terms:
Publication/ Report Number:

Mobility21 Project # 40459.14.1080376
Resource Type:

Tech Report
Geographical Coverage:

United States
Edition:

Final Report
Corporate Publisher:

Mobility21, Carnegie Mellon University
Abstract:

The focus of this project has been on addressing some remaining obstacles to the general deployment of PedPal, a smartphone app that assists pedestrians with disabilities in safely crossing signalized intersections. Specifically, work has centered mainly on the design and development of two new capabilities: (1) an approach to localization that is accurate enough to enable detection of pedestrian arrival at a given corner of the intersection as well as active monitoring of progress during crossing, and (2) a scalable V2I/P2I communication infrastructure. With regard to localization, work has focused on utilizing the increasing availability of ultrawideband (UWB) sensors to overcome the inaccuracy of Bluetooth beacons positioned at intersection corners. Experiments have been performed to verify the accuracy of UWB devices in this context, extensions to the app have been implemented to allow receipt of distance data from UWB sensors positioned at the intersection, and algorithms have been developed for both reliable identification of intersection corners and for tracking of pedestrian progress through the intersection.
Format:

PDF
Funding:

69A3551747111
Download URL:

https://rosap.ntl.bts.gov/view/dot/59230/dot_59230_DS1.pdf
File Type:

[PDF - 9.73 MB]
Collection(s):

University Transportation Centers ; US Transportation Collection
Main Document Checksum:

urn:sha-512:86bb518d2d636930edb365483350b46691c248507a5852a20e1e4b5011ebdf646e27ee4d04dd6df6f59d54b5971887b2eb90406d41b3a20a91b419afe5a22b15

File Language:

English

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