SLIDE 1 SHRP2 Project L11: Evaluating Alternative Operations Strategies to Improve Travel Time Reliability
Kittelson & Associates, Inc. ECONorthwest University of Washington Transportation Research Center University of Florida Transportation Center
- Dr. Joseph Schofer, Northwestern University
- Dr. Michael Meyer, Georgia Institute of Technology
Write Rhetoric
SLIDE 2
Presentation Overview
Key project objectives and findings Strategies and trends affecting reliability Recommended steps to improving agency effectiveness Mainstreaming reliability:
– Implementation road map – Recommended agency path
Estimating the value of reliability
SLIDE 3
Project Objective
Identify and evaluate strategies to meet road user reliability needs according to:
– Travel type (person vs. freight) – Travel location (urban vs. rural) – Time scenario (near-term vs. long-term)
Context for project findings and recommendations:
– Degree of congestion is the overriding factor affecting reliability
SLIDE 4 New/Emerging Strategies
Automation/Infrastructure
– Road pricing, real-time control of transit arrivals, IntelliDrive, vehicle automation, automation in truck operations
Information Technology/Data Sharing Technologies
– Real-time system status and predictive models, weather detection and response, accessible vehicle probe data
Integration/Cooperation
– Customized real-time multimodal routing, crash detection and clearance, real-time parking, conditions, and routing information
For each strategy, provide:
- description
- affected travel modes
- impacts on reliability
- implementation cost
Xxx strategies are identified
SLIDE 5 Trends Affecting Travel Time Reliability
Demographics
– 40% population increase by 2030
Environment
– Climate is changing
Energy
– Petroleum costs will rise
Technology & innovation
– Energy and communication sources and costs
Freight
– 90% increase in domestic tonnage
Financing
– Disconnect between supply and demand
Urban Sprawl Densification Privatization Energy Costs Technology Reliability
SLIDE 6
Effectively Integrating Reliability into an Agency
How is agency effectiveness measured?
– Output measures (number of VMS signs, 511 calls, average incident duration) – Outcome measures (effect of actions on improved travel time reliability and/or reduced delay)
What issues affect agency effectiveness?
– Availability of and access to appropriate resources – Control/understanding over when, where, and how disruptions occur – Knowledge/training in when and how to apply resources – Feedback on results of past performance
SLIDE 7 Steps to an Effective Agency Operation
SO&M: Application of ITS strategies to maintain and improve highway service in terms of recurring and non- recurring congestion
- 1. Incorporate Systems Operations and Management (SO&M) into
Institutional Architecture
Four Key Elements of Institutional Architecture: System Operations and Management (SO&M) Structure Awareness Establish SO&M Structure Establish SO&M as a High-Priority Budget Item Identify Public-Private Partnership Opportunities
Where does it fit in?
Typical DOT
Planning Operations Design SO&M Maintenance SO&M
SO&M
SLIDE 8 Steps to an Effective Agency Operation
- 2. Provide more accurate and accessible travel time information
Probe vehicles and point detection Surveillance and detection Pre-trip information Real-time information Roadside messages Modified travel behavior: Departure time Mode choice Route choice Improved network capacity utilization and reliability
SLIDE 9 Steps to an Effective Agency Operation
- 3. Develop safer, more efficient, and more intelligent vehicles
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SLIDE 10 Steps to an Effective Agency Operation
- 4. Manage Incidents, Work Zones and Special Events
– Pre-event
- construction phasing
- evacuation planning
– Post-event
- coordinated response
- service patrols
- Monitor and evaluate
infrastructure to determine vulnerability
SLIDE 11 Steps to an Effective Agency Operation
Reduce and encourage alternative travel Multimodal travel Travel reduction Low-cost changes to the physical roadway section Geometric design treatments Access management Lane treatments Strategies that influence and respond to demand Signal timing/ITS Traffic demand metering Variable speed limits Congestion pricing
- 5. Implement strategies and treatments to improve roadway performance
SLIDE 12
Agency Implementation Roadmap
Political steps
– Educate decision makers on need to balance demand and supply – Select accountability-based performance measures – Use pricing strategies to achieve performance outcomes – Participate in demand management programs
Interagency steps
– Create collaborative culture among agencies – Collect and share performance data – Encourage interaction with the private sector and trip generators
Technology steps
– Collect and share data with both public and private partners – Encourage private innovation and risk-taking
SLIDE 13 An Agency Path to Mainstreaming Reliability
1.
Introduce culture of service, innovation, and partnerships
2.
Prioritize projects per performance measures
3.
Integrate Agency Path
- Mode
- Jurisdiction
- Functional responsibilities
- Data
- Public/Private Partnerships
4.
Deploy Current & New Technologies
5.
Integrate Technologies
6.
Trade fuel tax for fees-for-service funding
Integration User Options Funding Structure
SLIDE 14 Options Theoretic Approach Summary
An options theoretic approach has been developed for the valuation of travel time reliability. This innovative approach is supported by theory and empirical estimations where travelers are willing to trade average travel time for lower travel time variability.
been successfully implemented in the travel demand model and benefit-cost analysis tool for a MPO.
ECONorthwest for PSRC Transportation 2020 Travel Model and BCA runs.
SLIDE 15
Questions for the Audience
What are the most problematic elements of the recommended agency path? What other steps should be included in the recommended agency path?
