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Implementing a Congestion Management System (CMS)

Implementing a Congestion Management System (CMS). Andrew Henry, DCHC MPO Jeremy Raw, DCHC MPO. Why are we doing this?. Federal requirement Adopted CMS structure – not yet implemented Currently monitor congestion data through Municipalities NCDOT Anecdotal information

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Implementing a Congestion Management System (CMS)

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  1. Implementing a Congestion Management System (CMS) Andrew Henry, DCHC MPO Jeremy Raw, DCHC MPO

  2. Why are we doing this? • Federal requirement • Adopted CMS structure – not yet implemented • Currently monitor congestion data through • Municipalities • NCDOT • Anecdotal information • Not systematic enough for LRTP, TIP, CIP, elected officials, managers, citizens & staff • Opportunity to improve travel demand model

  3. What are Goals of the CMS System? • Current and Historical Data on Transportation System Performance • Capacity to analyze current conditions and travel trends for all modes • Propose mitigation measures to be developed into projects for LRTP, TIP, CIP, policy changes, etc. • Update data on 2 year cycle

  4. Background on DCHC CMS project • Existing CMS plan has never been implemented • Chapel Hill & Carrboro working on 3rd “Mobility Report Card” • Separate initiative from MPO CMS • Will be incorporated in CMS • Dedicated $100,000 in STP-DA; possible additional funding • Municipalities & NCDOT already gather much required data (TMC, AADT, safety warrants)

  5. Highways Posted Speed Capacity Roadway geometry Signs and signals Traffic calming Transit Networks Stop locations Route patterns Scheduled service Other Facilities Sidewalks Bicycle Facilities ITS What data are we looking for? Types of Data Collected Facility Inventory

  6. What data are we looking for? Types of Data Collected • System Utilization, Congestion and Safety • Traffic Counts • Turning Movement Counts • Transit Ridership • Pedestrian and Bicyclist Counts • Traffic Flow Speed • Travel Times • Crash Data

  7. What do we do with the data? Uses of the CMS data • Project Development: LRTP, TIP & CIP • Congestion Reports • Travel Demand Modeling • System Deficiency Analysis • Historical Performance Trends • Policy Development • Safety Enhancements

  8. How much work is it? • Project Management Costs • Staff Resources • Consultant • Data Collection Costs • Equipment • Staff • Data Entry • Data Processing and Management Costs • Infrastructure (Hardware / Software) • Data cleanup and Quality Checking • Data retrieval and reporting

  9. How much will it cost? • Short answer: Too Much • Turning movement counts: $100,000 • Tube counts: $30,000 • Travel time counts: $70,000 • Plus: • Performance measures • Level of service • Mitigation strategies • Data management • Full report • Bottom line: $600,000

  10. How do we pay for it? • Hire and direct data collection ourselves • Combine data collection with other projects • Reduce density of information gathering • Only do AM and PM peak, not midday • Fewer travel time runs • Fewer locations • Phased collection (half the data per year) • Search for additional funding sources • Nag NCDOT to • Use better tube count equipment • Give us access to raw data

  11. What other challenges do we face? • Coordination of staff and consultants • Who does quality checking? • Can we meet data collection deadlines • Preparing report requires completed data • Diminishing returns • How many counts do we really need to get an accurate picture • Making data available for other projects

  12. How do we get the data? Organizing the collection process • System Design (Consultant) • System Coordination (MPO LPA Staff) • Surveyors / Data Collectors work for MPO LPA

  13. Where do we put the data? Organizing the Data Repository • MPO data repository • Currently under development • Current and historical geographical and statistical data for the entire MPO • Data is fully versioned • Target date • When is the data presumed current? • Entry/Modification date • When was the data entered into the system?

  14. Census data Demographics Jurisdiction Boundaries Land Use Data Tax Data Travel Networks Highway Transit Traffic Analysis Zones Environmental Constraints Major Destination Database Travel Survey information Boarding/Alighting Counts CMS Data Collection locations Collected data Where do we put the data? Filling the Data Repository

  15. How do we retrieve the data? • Convenient access • Internet / Intranet • Map look up • Pre-formatted tables and charts • Deliver data query results to other software (Excel, Access, GIS)

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