IDAS – ITS Deployment Analysis System and Analysis Tools for Planning for Operations

1. IDAS – ITS Deployment Analysis System and Analysis Tools for Planning for Operations Transportation leadership you can trust. presented toSafety Data Analysis Tools Workshop presented byKrista JeannotteCambridge Systematics, Inc. March 27, 2006

2. What is IDAS? • ITS Deployment Analysis System (IDAS) • FHWA sponsored software program released May 2000 • A sketch-planning tool to estimate ITS benefit and cost impacts, for over 60 types of ITS investments, in isolation or in combination with other deployments • Assists public agencies with integrating the deployment of ITS into the transportation planning process • Relies on traditional MPO travel demand model outputs to construct data inputs

3. Why was IDAS developed? • Provide a sketch-planning analysis capability for analyzing alternative ITS deployment scenarios and for testing tradeoffs of traditional highway and transit infrastructure options • Design a system which is consistent with the functional, technical, and resource requirements of state, regional, and local agencies • Develop a tool which assists agencies in integrating ITS into the planning process • Make IDAS compatible with current transportation planning models and outputs

4. Types of ITS Components in IDAS Advanced Public Transportation Systems Regional Multimodal Traveler Information Incident Management Freeway Management Electronic Toll Collection Emergency Management Arterial Management Electronic Fare Payment Railroad Grade Crossings Supporting and Generic Deployments Advanced Vehicle Control and Safety Systems Commercial Vehicle Operations

5. - Network - Data - Technology - Network - Data - Mode Choice - Assignment TDM IDAS - Capacity Analysis - Impact Evaluation - B/C Analysis - Capacity Analysis IDAS is a Postprocessor and Extender to the Travel Demand Model (TDM)

6. IDAS Input Data • Analysis Network – Output from travel demand model • Node coordinates • Link characteristics • Turn prohibitor (optional) • Origin-destination (O-D) number of trips • Zone-to-zone travel times (optional for in-vehicle auto trips) • Default Parameters, Impacts, and Costs – User may adjust • Speed-flow curves • Rates (emissions, fuel, safety) • Impacts of ITS options • Dollar value of benefits • Unit cost of equipment

7. IDAS Performance Measure Outputs • Systemwide performance measures including • Mobility • Travel time • Travel time reliability • Accidents (fatality, injury, property damage) • Emissions (HC, CO, NOx, PM10) • Fuel use • Agency efficiency • Costs (capital and operating & maintenance) • Benefit/cost • Viewed by • Market sector (mode) • Facility type • District (user defined)

8. How IDAS Works • User imports data from the travel demand model to recreate the model network within the IDAS software

9. How IDAS Works • User builds alternatives by choosing from a menu of over 60 types of ITS components and deploying them on the network in isolation or in any combination • IDAS maintains a database of system impacts and costs related to each type of deployment

10. How IDAS Works • IDAS performs internal network assignment, mode choice and other analysis (e.g., safety) to estimate impacts of ITS • IDAS reports outputs in terms of the incremental change in performance measures and the annual benefit/costs

11. How IDAS Works • IDAS reports outputs in terms of the incremental change in performance measures and the annual benefit/costs

12. How IDAS Works • IDAS reports outputs in terms of the incremental change in performance measures and the annual benefit/costs

13. ITS Benefit Library

14. Advantages Includes safety analysis for investments in ITS/operations Mode (auto, truck) Facility (freeway, arterial) By V/C ratio Default safety rates are user modifiable for local conditions Use of validated travel demand model data adds credibility and consistency with planning process Disadvantages Requires travel demand model Effort required for initial setup and validation Safety rates not adjustable down to link level IDAS – Advantage and Disadvantages

15. IDAS – For More Information • IDAS web site at http://idas.camsys.com • About IDAS • What’s New • FAQs/User Tips • Documentation • Case Studies • Contacts

16. FHWA Improving the Application of Existing Methods to Advance Transportation Operations

17. Objectives • Synthesize current practices in the use and application of technical tools and methods for planning-level analysis and evaluation of operations improvements • Provide information, direction, and benefits on the possible use of innovative applications and methods • Study real-world application and use of innovative applications and methods for planning analysis and evaluation of operations improvements • Develop easy-to-follow reference and resource materials

18. Key Safety Related Findings/Challenges • Current planning practices do not typically recognize non-recurring delay or its causes (e.g., incidents, construction, weather, special events, etc.) which is estimated at 50-60 percent of total delay • Traditional planning methods not typically sensitive to many of the benefits associated with operational improvements (e.g., non-recurring congestion, safety)

19. Recommended Innovative Methods • Estimate delays by source (e.g., incidents) to help identify strategies that target the types of delay • Include safety in needs identification • Guidance on which operational strategies help address safety deficiencies • Post-process safety analysis (similar to current emissions analysis)

20. www.plan4operations.dot.gov