CurvePortal for Automated Identification and Extraction of Horizontal Curve Information

This project developed a prototype of CurvePortal, a web interface for automatically extracting horizontal curve location and geometric information from GIS roadway maps using an improved curve data extraction algorithm (CurveFinder). The concept of the algorithm is to use the directional offsets of successive line vertices to identify and categorize roadway curves. Model Inventory of Roadway Elements (MIRE) curve types and MIRE horizontal curve elements, including curve length, radius, degree of curvature, direction, etc. (except for superelevation) were incorporated and their compatibility validated. The CurveFinder algorithm was improved, especially its accuracy when applied on low-quality GIS roadway maps. Additional automation features were incorporated to enhance CurveFinder’s efficiency and accuracy. A prototype CurvePortal was developed that transportation agencies could access to upload their GIS roadway shapefiles for curve data extraction. The CurvePortal is hosted on WisTransPortal, an online transportation data portal at the University of Wisconsin–Madison. Technology transfer efforts have been initiated with several state DOTs that have expressed interest in using CurveFinder/CurvePortal.


  • English


  • Status: Completed
  • Funding: $100000
  • Contract Numbers:

    Project 20-30, IDEA

  • Sponsor Organizations:

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590

    American Association of State Highway & Transportation Officials (AASHTO)

    444 North Capitol Street, NW, Suite 225
    Washington, DC  United States  20001

    National Cooperative Highway Research Program

    Transportation Research Board
    500 Fifth Street, NW
    Washington, DC  United States  20001
  • Project Managers:

    Jawed, Inam

  • Performing Organizations:

    University of Wisconsin, Madison

    Madison, WI  United States  53706
  • Principal Investigators:

    Noyce, David

    Chitturi, Madhav

  • Start Date: 20150701
  • Expected Completion Date: 0
  • Actual Completion Date: 20180301
  • Source Data: RiP Project 40034

Subject/Index Terms

Filing Info

  • Accession Number: 01569558
  • Record Type: Research project
  • Source Agency: Transportation Research Board
  • Contract Numbers: Project 20-30, IDEA
  • Files: TRB, RiP
  • Created Date: Jul 16 2015 1:00AM