Evaluation Tools to Support ITS Planning Process FDOT Research #BD015-19

1. Evaluation Tools to Support ITS Planning Process FDOT Research #BD015-19 presented toModel Advancement Committee presented byMohammed Hadi, Ph.D., PE November 24, 2008

2. IDAS Limitations • Evaluate a large number of ITS deployments. However: • Not consistent with the Florida calibrated models • Requires manipulation of FSUTMS output files for use as inputs to the tool • Software design and interfaces using 1990s software technologies • Methods and some parameters selected in the 1990s • Not flexible to allow evaluating new ITS elements and components, performance measures, etc.

3. FDOT Project • Develop a tool and methods to perform ITS sketch planning evaluations as part of the FSUTMS/Cube environment • No need for file conversion • Use calibrated regional models • Flexible and extendable evaluation environment • Up to date methods and parameters • Powerful data handling and modeling capabilities. State-of-the-art user interface of Cube • The project is a joint effort of the FDOT System Planning Office and the FDOT ITS Section

4. Evaluated ITS Deployment (1) • Ramp Metering • Incident Management Systems • Highway Advisory Radio (HAR) and Dynamic Message Signs (DMS) • Advanced Travel Information Systems • Managed Lanes • Signal Control • Transit Vehicle Signal Priority • Emergency Vehicle Signal Priority

5. Evaluated ITS Deployment (2) • Monitoring and Management of Fixed Route Transit • Transit Information Systems • Transit Security Systems • Transit Electronic Payment Systems • Smart Work Zones • Road Weather Information Systems

6. Evaluation Tool

7. Assessment Elements • Performance modules (emission, fuel consumption, safety, TT) • ITS impacts • ITS costs • Dollar values of benefits

8. Benefit Evaluation Methods • A method developed for each component • Review and assessment of methods used in evaluation tools • Review of literature • Default ITS impact parameters derived based on a review of previous evaluation studies, US DOT JPO benefit database and the values used in existing ITS sketch planning tools. • The user will be able to change the default ITS impact parameters and perform sensitivity analysis.

9. Model Input • ITS Component

10. Model Input for Incident Management (1) • Alternative Information • Alternative letter • Modeling year • Working directory

11. Model Input for Incident Management (2) • Parameters from Demand Model • Auto occupancy • Percentage of truck trips in Truck_Taxi trips

12. Model Input for Incident Management (3) • Input for ITS Applications • Analysis periods, days, and volume factor for each period • Type of incident management (Six combinations for incident management with or without DMS and HAR)

13. Model Input for Incident Management (4) • Input for ITS Applications (Con’t) • Information type provided by DMS and HAR

14. Model Input for Incident Management (4) • Deployment Location • Indicate the links within the coverage of incident management by adding one new attribute “IM” and assign the value of 1 to this attribute

15. Model Input for Incident Management (5) • Analysis parameters • Incident information: frequency, duration, capacity reduction • Accident rate • Truck type and fuel consumption rate • Vehicle class percentage and emission rate for CO, HC, and NOx Notes: Default values are provided, however, user can modify it based on local conditions.

16. Model Input • Impact factors • Diversion rate due to DMS and HAR • Fatality reduction rate and crash reduction rate

17. Model Input • Impact factors (Con’t) • Average trip length on the mainline and on the alternative route • Percentage of diverted vehicles using freeway • Road ranger service patrol activities and costs

18. Model Input • Dollar Value • Dollar value of time • Accident costs • Fuel costs • Emission costs

19. Model Input • Equipment and Costs • Discount rate

20. Model Input • Equipment and Costs (Con’t) • Equipment and unit costs for incident management, DMS, and HAR

21. Modeling Procedure Example • Overall Structure for Incident Management • Deployment • Performance measures and benefits • Costs • Benefit/Cost ratio

22. Modeling Procedure • Deployment • Add one new attribute to each link to indicate the type of incident management

23. Modeling Procedure • Performance Measures and Benefits • Initialize the output files • Calculate the incident delay and time savings • Calculate reduction in accident number and costs • Calculate fuel savings

24. Modeling Procedure • Performance Measures and Benefits (Con’t) • Calculate the emission reductions • Calculate the monetary benefits of road ranger service patrol • Output the performance and summary of benefits

25. Performance Measures and Benefits • Initialization • Calculate the total number of study periods • Set all the initial values to be zero

26. Performance Measures and Benefits • Travel Time • Loop over all the analysis periods • Calculate the traffic volume during the study period • Prepare the calculation of travel time on alternative route • Calculate incident delay and total time savings • Save the performance and benefits for each analysis period

27. Performance Measures and Benefits • Safety • Loop over all the analysis periods • Calculate number of fatalities, injuries, PDO • Calculate accident costs • Save the performance and benefits for each analysis period

28. Performance Measures and Benefits • Fuel Consumption • Loop over all the analysis periods • Calculate vehicle miles in queue and fuel consumption in queue • Calculate fuel savings • Save the performance and benefits for each analysis period

29. Performance Measures and Benefits • Emissions • Loop over all the analysis periods • Calculate emissions of CO, HC, NOx due to the queues • Calculate emission reductions • Save the performance and benefits for each analysis period