Integrated Corridor Analysis Tool (ICAT)

William W. StoeckertI-95 Corridor Coalition

Presentation

• Problem• Vision• Work Steps• Status • Next Steps• Applications

Integrated CorridorAnalysis 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

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

Many maps, but no Corridor-scale transportation planning networks

Complete map coverage Incomplete network coverage

State and MPO transportation

networks

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

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

ICAT VISION

• GIS- based multi-state transportation network

• Basic roadway and traffic data

• 16-state Coalition regional coverage

• Accessible to Coalition members

Local Roadway

Data

Metro Travel

Demand Data

Statewide Travel

Demand Data

State Roadway

DataHPMS

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

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

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

Linear Referencing SystemPavement 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

Status of Work

• Completed– Network obtained– LRS tool methodology complete– Federal NHPN & HPMS data related for all

jurisdictions– State data obtained from 3 states

Proposed Next Steps

• Development of ICAT Delivery System

• Complete Data Integration

• Trip Table Development– General Vehicle Trip Tables– Freight-Truck Trip Tables

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.

Complete Data IntegrationObjective: 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.

Trip Table Development1 - 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

ICAT Applications

• Corridor bottleneck analysis• Freight planning• Traveler information/511• Evacuation/emergency planning• Safety/accident prevention

Multi-State Capacity Analysis

Route Analysis

Bottleneck Analysis

Select Link: I-95 @ Delaware/Maryland Border

Long Distance Travel Demand

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