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Published byPierce Alexander Modified over 9 years ago
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Integrated Corridor Analysis Tool (ICAT) William W. Stoeckert I-95 Corridor Coalition
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Presentation Problem Vision Work Steps Status Next Steps Applications
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Integrated Corridor Analysis Tool (ICAT) Analysis and planning tool to inform and coordinate multi-state transportation planning, investment, and operations planning Developing a GIS-based transportation network, a linear referencing system, and basic roadway data Initial applications will focus on bottleneck analysis, freight planning, and emergency/ evacuation planning
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Problem “Islands of information” –State of practice - a patchwork of unconnected transportation planning networks, roadway and rail line data, and trip information –Result - Coalition members cannot use the information effectively to inform and coordinate multi-state transportation planning, investment, and operations planning
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Many maps, but no Corridor-scale transportation planning networks Complete map coverageIncomplete network coverage State and MPO transportation networks
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Reams of roadway and rail line data, but few common reference points Roadway Conditions Database No. of lanes Pavement type Pavement condition Traffic volume… …reported by section number Fatality and Injury Database Fatalities Injuries… …reported by milepost location 12.4
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Detailed information on metropolitan trips, but limited information on long-distance interstate trips Metropolitan Trip Information Auto, bus, subway, and commuter rail –Truck and freight rail in larger MPOs Work, business, recreation, etc. trip purposes Annual, daily, peak and off- peak Traffic analysis zones Interstate Trip Information Some auto trips, large truck trips only, freight rail Limited number of trip purposes and commodities Annual State-to-state or by large economic regions (BEA-to- BEA) Some proprietary county-to- county data
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ICAT VISION GIS- based multi-state transportation network Basic roadway and traffic data 16-state Coalition regional coverage Accessible to Coalition members
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Local Roadway Data Metro Travel Demand Data Statewide Travel Demand Data State Roadway Data HPMS FAF (truck only) Corridor Roadway Data Corridor Travel Data Local/Metro Transportation Network State Transportation Network Multi-state Transportation Network National Transportation Network (NHPN) ICAT
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Project Work Steps Obtain GIS-based network map (base line- layer) and evaluate for accuracy, detail, and connectivity Process and correct the base line layer Develop and apply the linear referencing system (LRS) Obtain roadway characteristics, capacity, and operations data for several States Integrate and relate data to network
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GIS-Based Network Red lines – FHWA National Highway Planning Network (NHPN) –Covers Interstates, National Highway System, National Truck Network, principal arterials, intermodal connectors Green lines – “GDT routes/Caliper “Streets” base layer –Publicly available road network produced by GDT and made available to license holders of Caliper’s TransCAD (Caliper Streets) –Covers NHPN, local roads, and collectors
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Linear Referencing System Pavement Types Functional Class Lane Widths Accidents ROUTE LRS relates information from separate databases to a common route location system Lane Widths Accidents ROUTE SEGMENTS LRS makes possible dynamic segmentation of network data; e.g., to study relationship of accident locations and pavement widths ROUTE
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Status of Work Completed –Network obtained –LRS tool methodology complete –Federal NHPN & HPMS data related for all jurisdictions –State data obtained from 3 states
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Proposed Next Steps Development of ICAT Delivery System Complete Data Integration Trip Table Development –General Vehicle Trip Tables –Freight-Truck Trip Tables
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Development of ICAT Delivery System Objective: Develop a delivery system that will make the ICAT GIS network and set of linked databases available on-line to Coalition members. –Option 1: Store Geodatabase on workstation accessible through an IIS server running under Windows NT or Windows XP Pro. –Option 2: Build website using Apache/Tomcat software and Java programs.
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Complete Data Integration Objective: Complete integration of State data begun in Phase I (6 to 8 more States and the District of Columbia) using same strategy so that all 17 jurisdictions are covered.
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Trip Table Development 1 - Develop General Vehicle Trip Tables –Develop current and future year general vehicle trip tables (auto and all-truck) using traffic volume data and an ODME (origin-destination matrix estimation) methodology. 2 – Develop Freight-Truck Trip Tables (Optional Task) –Purchase/lease Reebie TRANSEARCH freight-truck data (county-to-county level trip table) and develop system wide base and future year freight truck trip tables. –Construct non-freight truck trip tables
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ICAT Applications Corridor bottleneck analysis Freight planning Traveler information/511 Evacuation/emergency planning Safety/accident prevention
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Multi-State Capacity Analysis
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Route Analysis
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Bottleneck Analysis Select Link: I-95 @ Delaware/Maryland Border
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Long Distance Travel Demand
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Conclusions ICAT is a tool that will support analysis of long distance travel issues affecting multiple states It directly supports the Coalition’s vision, mission, goals and guiding principles Longer term, it can serve as a archive of information provided by member agency systems
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