Utilizing the systems engineering process in support of building a construction traveler information for I-35 widening in Central Texas Conference Paper uri icon


  • The Texas Department of Transportation (TxDOT) is reconstructing 100 miles of the Central Texas portion of I-35 from 2 lanes to a minimum of 3 lanes in each direction. The diverse users of I-35 create substantial demand, with many sections of I-35 seeing well over 100,000 vehicles a day. Given this context and the fact that more than 1,000 businesses front I-35 within the District, the reconstruction challenges are significant. TxDOT is using a comprehensive approach of best practices, mobility coordination, and a construction traveler information system to keep the public informed and enhance safety and mobility during the 5-years of construction. The Texas A&M Transportation Institute (TTI) was contracted to collaborate with the Waco District in the design, development, implementation, and operation of a construction traveler information system for I-35 corridor. The first phase capabilities include a comprehensive lane closure database, public lane closure dissemination, predictive analysis of lane closure impacts, en-route travel time dissemination and social media support. These capabilities are supported by an extensive array of ITS equipment, including Bluetooth readers, volume and classification counters and portable changeable messages signs. This paper details the systems engineering process utilized to identify the (1) Vision, (2) Goals and Objectives, (3) Stakeholders, (4) User Groups, (5) User Needs, (6) Operational Scenarios, (7) System Functions, and (8) Component Functional Requirements to guide the development of the overall system across the multiple phases of design and deployment.

published proceedings

  • 21st World Congress on Intelligent Transport Systems, ITSWC 2014: Reinventing Transportation in Our Connected World

author list (cited authors)

  • Brydia, R. E., Voigt, A., Poe, C. M., Balke, K., & Ullman, G

complete list of authors

  • Brydia, RE||Voigt, A||Poe, CM||Balke, K||Ullman, G

publication date

  • January 2014