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What is System Management?

Southern California Association of Governments. What is System Management?. Stakeholder Meeting September 25, 2007. System Metrics Group, Inc. All constituents recognize that we cannot build our way out of congestion. Congestion continues to increase at faster rates than population growth

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What is System Management?

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  1. Southern California Association of Governments What is System Management? Stakeholder Meeting September 25, 2007 System Metrics Group, Inc.

  2. All constituents recognize that we cannot build our way out of congestion • Congestion continues to increase at faster rates than population growth • Construction costs have sky rocketed over the last few years

  3. We must therefore look for ways to get more out of our existing system • Increasing system productivity requires: • Reliance on technology to the extent possible • Focus on operations • Preservation of existing assets • Pragmatic demand management

  4. System Management aims to maximize the value of the existing system and strategically expand it

  5. The Foundation of System Management is System Monitoring and Evaluation (we cannot improve system efficiency if we cannot measure it)

  6. Performance measures allow us to understand congestion … Source: California Department of Transportation - Freeway Performance Report, 2003

  7. … and causes of congestion … NORTHBOUND I-880 AVERAGE SPEED (mph) 10/1/04 – 10/31/04 (TUE-THUR) Recurrent traffic congestion bottleneck location 23rd Avenue length of congestion SR-238 DIRECTION OF TRAVEL Tennyson Fremont period of congestion Auto Mall Pkwy 12 AM 5 AM 11 AM 5 PM 11 PM TIME OF DAY SPEED COLORS (mph) 25 30 35 40 45 50 55 60 65 70 75

  8. … as well as other system performance measures • Mobility – Delay, Speed, Travel Time • Reliability – Variation of Travel Time • Safety – Accidents, Incidents • Productivity – Lost lane miles

  9. For this assignment, we are developing a system management plan at the corridor level • Initial focus will be on the freeway component of the corridor • However, in the future, the resulting system management plan can be integrated with arterial management plans • Impacts on arterials (e.g., ramp wait times) will still be quantified indirectly • Freeway management plans will also consider transit to the extent possible

  10. Corridor System Management Plans • This study will develop first cut of CSMPs • CSMPs should be updated on a regular basis: • How are trends changing? • How effective were the strategies that were implemented? • Link to other corridor components (e.g., arterials) • Test additional strategies (e.g., HOT lanes) • CSMPs require continuous integration of the planning and operations functions

  11. Questions?

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