Statewide Ramp Control Plan

Statewide Ramp Control Plan

Wisconsin Statewide Ramp Control Plan WisDOT Ramp Metering And Control Plan July 2006 Produced by Wilbur Smith Associates on behalf of the Wisconsin Department of Transportation Wisconsin Statewide Ramp Control Plan Table of Contents EXECUTIVE SUMMARY............................................................................................................... 1 TASK DESCRIPTION .................................................................................................................................... 1 CHAPTER 1 LITERATURE REVIEW .............................................................................................2 WHAT IS RAMP METERING? ........................................................................................................................ 2 WHAT IS RAMP CONTROL?.......................................................................................................................... 3 LITERATURE REVIEW.................................................................................................................................. 5 RESULTS ..................................................................................................................................................... 9 When to Use Ramp Metering....................................................................................................................... 9 Why Use Ramp Metering.......................................................................................................................... 10 RAMP METERING DEPLOYMENTS ............................................................................................................. 11 GEOMETRIC CONSIDERATIONS................................................................................................................. 13 TRAFFIC CRITERIA .................................................................................................................................... 15 Availability of Alternative Routes ............................................................................................................... 16 GOALS AND STRATEGIES OF RAMP METERING ......................................................................................... 17 THE ROLE OF MICRO SIMULATION ON RAMP METERING DESIGN............................................................ 18 HOW TO IMPLEMENT RAMP METERING.................................................................................................... 18 DESIGN .................................................................................................................................................... 19 OPERATIONS ............................................................................................................................................ 20 ENFORCEMENT......................................................................................................................................... 23 RESULTS ................................................................................................................................................... 23 Survey of Previously Used Ramp Metering Implementation Criteria ................................................................. 23 Benefits/Cost................................................................................................................................................... 24 IMPLEMENTATION CHALLENGES .............................................................................................................. 26 Why Use Ramp Control .................................................................................................................... 27 When to Use Ramp Control....................................................................................................................... 27 Design Considerations...................................................................................................................... 28 HOW TO IMPLEMENT RAMP CONTROL GATES ..................................................................................... 29 CONCLUSIONS .......................................................................................................................................... 29 Keys to Successful Ramp Metering Implementations......................................................................................... 30 Proposed Ramp Metering Implementation Criteria.......................................................................................... 31 Pre-Deployment of Infrastructure .................................................................................................... 32 Ramp Control Criteria....................................................................................................................... 32 CHAPTER 2 DEVELOP AND APPLY METHODOLOGY................................................................ 33 WHAT IS SYSTEMS ENGINEERING ............................................................................................................. 33 How will it be applied? ............................................................................................................................. 34 CONCEPT OF OPERATIONS ....................................................................................................................... 34 Definition............................................................................................................................................... 34 High Level Description ............................................................................................................................. 35 Identify Stakeholders................................................................................................................................. 36 Vision................................................................................................................................................... 37 Goals............................................................................................................................................................... 38 Objectives....................................................................................................................................................... 38 Metrics............................................................................................................................................................ 39 Operations.............................................................................................................................................. 39 High Level Requirements........................................................................................................................... 40 METHODOLOGY FOR PRELIMINARY RAMP METER SITE SELECTION ......................................................... 42 Proposed Ramp Metering Decision Process .................................................................................................... 42 Proposed Ramp Metering Implementation Criteria.......................................................................................... 43 Ramp Control Criteria....................................................................................................................... 44 I Wisconsin Statewide Ramp Control Plan PRELIMINARY APPLICATION TO THE SE CORRIDOR.................................................................................. 47 Proposed Ramp Metering Implementation Criteria.......................................................................................... 47 SUMMARY ................................................................................................................................................. 49 CHAPTER 3 ASSESS OPERATIONAL FEASIBILITY ..................................................................... 50 IDENTIFY DECISION MAKING PROCESS.................................................................................................... 50 Concept of Operations ............................................................................................................................... 50 Criteria.................................................................................................................................................. 51 Design Issues........................................................................................................................................... 55 Funding.............................................................................................................................................. 63 APPLICATION FOR I-94 AT STH 20............................................................................................................ 66 Application of Traffic Criteria.................................................................................................................... 66 Ramp Geometry....................................................................................................................................... 68 Summary ............................................................................................................................................... 69 APPLICATION FOR I-94 AT STH 158 ....................................................................................................... 70 Application of Traffic Criteria.................................................................................................................... 70 Ramp Geometry......................................................................................................................................

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