Connecting Pedestrians with Disabilities to Adaptive Signal Control for Safe Intersection Crossing and Enhanced Mobility: Concept of Operations

This project aims to develop PedPal, a mobile app that enables pedestrians with disabilities to more safely and more efficiently cross signalized intersections. The proposed technology concept is a smart phone app that interacts directly with a real-time, adaptive traffic signal control system at the intersection via 3G/4G wireless ration technology or via Dedicated Short Range Communication (DSRC) radio technology. Basic capabilities will enhance safety by allowing the user (1) to communicate crossing intent and required crossing time, and receive an extended crossing duration, (2) to receive feedback if movement outside of the crosswalk is detected during crossing, and (3) to dynamically extend the crossing duration if slower than expected crossing progress is observed. Advanced capabilities will include anticipation of the user’s arrival at the intersection and minimizing wait time and (2) utilizing real-time bus information to better synchronize user arrival times at bus stops. This document details the overall Concept of Operations of the proposed system, including a discussion of the current use state, rationalization for the changes, the range of user scenarios that it is intended to support, and its impact.

  • Record URL:
  • Corporate Authors:

    Carnegie Mellon University

    Pittsburgh, PA  United States 

    Department of Transportation

    Intelligent Transportation Systems Joint Program Office
    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Smith, Stephen F
    • Rubinstein, Zachary B
    • ORCID 0000-0002-6344-8692
    • Kamalanathsharma, Raj
    • Marousek, Jim
    • Sarkhili, Sara
    • Dias, Bernardine
    • Bahram, Sina
  • Publication Date: 2019-3

Language

  • English

Media Info

  • Media Type: Digital/other
  • Edition: Task 2.1.1 Report
  • Features: Figures; Photos; References; Tables;
  • Pagination: 67p

Subject/Index Terms

Filing Info

  • Accession Number: 01733292
  • Record Type: Publication
  • Report/Paper Numbers: FHWA-JPO-19-750
  • Contract Numbers: DTFH6117C00014
  • Files: NTL, TRIS, ATRI, USDOT
  • Created Date: Mar 11 2020 5:15PM