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Near Real-Time Crash Data During Highway Reconstruction (I-235 through Des Moines)

This project focuses on the utilization of Traffic Records Forum data for real-time crash analysis during the reconstruction of I-235 in Des Moines. The implementation of TraCS and DB2 systems allows for efficient data collection and transfer, enabling timely assessment of traffic impacts and safety measures. The project team aims to enhance the current paper-based reporting system by integrating electronic transfers to the TMC for better monitoring. Key areas like traffic diversion, safety, and impact assessment will be addressed through advanced data analysis tools.

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Near Real-Time Crash Data During Highway Reconstruction (I-235 through Des Moines)

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  1. Near Real-Time Crash Data During Highway Reconstruction(I-235 through Des Moines) 2003 Traffic Records Forum Denver, CO July 16, 2003 Michael D. Pawlovich Traffic Safety and Crash Analysis Engr. Iowa DOT - Traffic and Safety Michael.Pawlovich@dot.state.ia.us

  2. I-235 Reconstruction • Currently reconstructing ramps and bridges • Mainline traffic not diverted • Paths to downtown Des Moines affected (bridge implosions, ramp closings, traffic diversions) • Mainline begins next year (in stages) • Mainline traffic diversion  arterials • TMC not fully functional or equipped

  3. I-235 Area

  4. I-235 NHS Routes

  5. Crash Data Collection • TraCS used along corridor • Des Moines, West Des Moines, Clive, Urbandale, Windsor Heights, State Patrol • Daily transmission  DOT MVD  DB2

  6. I-235 Project Team Desires • Real-time (weekly) assessment of impacts • Traffic • Safety • Initial: All reports on paper  TMC • w/ TraCS  DB2, electronic transfer available • TraCS  DB2  TMC

  7. Solution TraCS DSM MVD DB2 TMC PC SAVER SAS WDM WSH Clive Urbandale ISP

  8. DB2  PC TMC PC DOT Mainframe DB2 Mainframe SAS PC SAS Mainframe SAS Mainframe SAVER format Mainframe SAS TMC PC PC SAVER format

  9. Comparison Maps - Total Before After

  10. Comparison Maps - Severity Before After

  11. TMC Needs • Computer • SAS  ~ $1000-$1500 • ArcView 3.3  ~ $1200 • SAVER  no cost

  12. Beyond TMC • DOT-wide  Districts via DOT LAN (monthly) • ISP  Central + ISP LAN (monthly?) • Outside DOT  CDs (quarterly)

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