TSMO & Reliability
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The document discusses transportation system management and operations (TSMO) and travel time reliability. It outlines how TSMO focuses on optimizing traffic management, traveler information, incident management, and demand management using multimodal and technology-based approaches. Travel time reliability is defined in terms of variability in travel times and key measures like buffer time. Ways to improve reliability include incorporating TSMO strategies, providing better traveler information, managing incidents and special events, and implementing roadway performance strategies. The transportation landscape is changing due to trends in demographics, the environment, technology, and other factors. Agencies should respond by prioritizing performance-based projects, integrating data and technologies, and partnering with the private sector.
TSMO & Reliability
- 1. Transportation System Management and Operations & Travel Time Reliability Presentation by Marais Lombard, PE
- 2. Introduction What is Transportation System Management and Operations (TSMO)? Why Travel Time Reliability? What is Changing the Transportation Landscape? How Should we Respond?
- 3. Background Federal & State Transportation Policy Background Intermodal Surface Transportation Efficiency Act (ISTEA, 1991) Transportation Equity Act for the 21st Century (TEA-21, 1998) Safe, Accountable, Flexible and Efficient Transportation Equity Act A Legacy for Users (SAFETEA-LU, 2005): Paradigm Shift Future (TSMO) Historical (Capacity) Manage Demand Improve Reliability Increase Capacity Reduce Travel Time
- 4. What is TSMO? Optimized Management and Operations Supply management Demand management Focus Areas: multimodal traffic management traveler information traffic incident management transportation demand management Projects are Typically Multi-modal Cross-jurisdictional Technology rich (ITS)
- 5. What is Travel Time Reliability? Travel time reliability is related to the uncertainty in travel times It is defined as the variation in day-to-day travel time for the same trip by: purpose origin/destination time of day mode route Large variability = unreliable
- 6. Why Does Reliability Matter?
- 7. Example Day-to-Day Variation in Travel Time
- 8. Key Reliability Measures Value Provided to User Definition Measure The extra time a traveler should allow to arrive on-time for 95 percent of all trips The 95 th percentile travel time minus the average travel time divided by the average travel time Buffer Index (%) How much larger the potential total travel time is than the ideal or free-flow travel time The ratio of the Planning Time to the Ideal or Free Flow Travel Time Planning Time Index The total travel time a traveler should allow to arrive on-time 95% of the time 95 th percentile travel time Planning Time
- 9. Graphical Illustration of Reliability Measures
- 11. How can Reliability be Improved?
- 12. How can Reliability be Improved? 1. Incorporate TSMO into Agency Institutional Architecture Agencies with more comprehensive strategy applications that are increasingly integrated, standardized, and comprehensive distinguished from agencies with less well-developed TSMO activities through four key institutional features Four Key Elements of Institutional Architecture: Awareness Structure Funding Priority Partnerships Where does TSMO fit in? Typical DOT Planning Operations Design TSMO Maintenance TSMO TSMO
- 13. How can Reliability be Improved? 2. Provide more accurate and accessible travel time information 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
- 14. How can Reliability be Improved? 3. Develop safer, more efficient, and more intelligent vehicles Source: www.intellidriveusa.org Vehicle Technologies: Vehicle Infrastructure Integration Driver Assistance Products
- 15. How can Reliability be Improved? 4. Manage Incidents, Work Zones and Special Events Pre-event construction phasing evacuation planning service patrols Post-event incident detection coordinated response work zone management Monitor and evaluate infrastructure to determine vulnerability work zone management
- 16. How can Reliability be Improved? 5. Implement strategies and techniques to improve roadway performance Reduce and encourage alternative travel Single occupant travel reduction Multimodal travel Low-cost changes to the physical roadway section Lane treatments Access management Geometric design treatments Strategies that influence and respond to demand Congestion pricing Variable speed limits Traffic demand metering Signal timing/ITS
- 17. A Day in the Life of Reliability 1 “ K” Guy is: Before Work Traveling to Work Going for Lunch Traveling back Home Conducting other Business How we can help: Arterial and Freeway Data Management Pre-trip information Road weather information Transit Traveler Information Travel Options Telecommuting Ride-share
- 18. A Day in the Life of Reliability 2 “ K” Guy is: Before Work Traveling to Work Going for Lunch Traveling back Home Conducting other Business How we can help: Vehicle Technologies IntelliDrive Advanced crash avoidance Integrated Transportation Operations Adaptive Signal control Transit signal priority Variable speed limits Changeable Lane Assignments Reversible lanes Temporary shoulder use Hard shoulder running
- 19. A Day in the Life of Reliability 3 “ K” Guy is: Before Work Traveling to Work Going for Lunch Traveling back Home Conducting other Business How we can help: Integrated Multimodal Corridors Multimodal traveler information Transit signal priority Advanced Transportation Automation Systems Parking Management
- 20. A Day in the Life of Reliability 4 “ K” Guy is: Before Work Traveling to Work Going for Lunch Traveling back Home Conducting other Business How we can help: Active Traffic Management Freeway Systems Lane treatments Ramp metering & closure Electronic toll collection Incident Management Automatic crash and incident detection, notification On-scene incident management Work Zone Management Vehicle Technologies
- 21. A Day in the Life of Reliability 5 “ K” Guy is: Before Work Traveling to Work Going for Lunch Traveling back Home Conducting other Business How we can help: Commercial Vehicle Operations Freight Shipper Congestion Information Weight in Motion Technologies Smart Freight Unobtrusive inspection technologies Load matching software Parking availability & reservations
- 22. What is Changing the Transportation Landscape? Demographics, Land Use and Urbanization Environment and Climate Change Energy Costs and Availability Technological Innovation Freight Finance, Road Pricing and Privatization
- 23. Demographics, Land Use and Urbanization Aging Population (baby boom from 1946 – 1960) Driving – slower reaction time / less capacity Suburban seniors aging in place Increasing capabilities of seniors – and thus more elderly drivers Increasing transit usage Source: US Census Bureau
- 24. Environment and Climate Change Increased recognition of & response to climate change highway vehicles (passenger cars and trucks) accounted for 79% of transportation CO2 emissions in 2006. reduce emissions from passenger cars and especially from diesel trucks and trains Adverse weather pose a significant threat to the nation’s roads Source: Inventory of Greenhouse Gas Emissions and Sinks: 1990 – 2005 (April 2007) www.epa.gov
- 25. Energy Cost & Availability AEO2009 look beyond current economic and financial woes and focus on factors that drive U.S. energy markets uncertain world oil prices increasing use of renewable fuels shift in the transportation fleet to more efficient vehicles improved efficiency in end-use appliances Hybrid vehicle sales 40 percent in 2030 Source: Energy Information Administration: Annual Energy Outlook 2009
- 26. Technology Innovation In-vehicle ITS Vehicle Infrastructure Integration (Intellidrive) Driver Assistance Products Communication expansion through widespread real-time traveler information Integrated transportation operations Adaptive signal control Incidents & special events management Advanced Transportation Automation Systems Next generation road weather info systems Work zone management Various Freight Technologies
- 27. Freight AASHTO - 90% Increase in tons moved by 2035 Continued shift to just-in-time delivery systems More vehicles hauling smaller truck loads Countervailing trend towards larger trucks Offer increased revenue per ton mile Freight and passenger traffic continue to share same network for most part Future increase in passenger congestion will adversely affect the freight traffic and vice-versa.
- 28. Finance, Road Pricing and Congestion Existing tax-based financing structure will cause: Gap between funds and infrastructure investment needs Increasing congestion & unreliable travel during peak periods Pavement and structure deterioration throughout system
- 29. We are currently in a Downward Cycle } Net Effect Less local, regional, and economic competitiveness
- 30. Trip Decision Process: Today User Focuses towards auto, which usually wins on time: Demand focused on single mode; speed across time & space is reactionary User believes he’s already paid for a service he isn't receiving No guidance on which investments will yield the greatest value Difficult to revealed modal preference Demand is not balanced with supply, resulting in unreliability
- 31. The Vision: An Upward Cycle } Net Effect Improved local, regional, and economic competitiveness
- 32. Trip Decision Process: Ideal User chooses what is most cost-efficient based on travel needs: Demand is spread by time, mode, space Price is tied to value received System usage provides revenue to support program, innovation User choices gives insight on market preferences System reliability is enhanced & maintained
- 33. How Should we Respond? Recommended Agency Path Introduce culture of service, innovation, and partnerships Prioritize projects per performance measures Integrate Agency Path Mode Jurisdiction Functional responsibilities Data Public/Private Partnerships Deploy Current & New Technologies Integrate Technologies Fuel tax funding for fees-for-service funding Integration User Options Funding
- 34. How Should we Respond? Role of the Private Sector Important now Data collection Data fusion Information distribution Private role will grow Technologies Innovation Capabilities Options Risk Taking Private Sector Responsibilities Public Sector Responsibilities Today (2010) Private Sector Responsibilities Public Sector Responsibilities Future (20+years)
- 35. The Future Transportation System Reliability Information — Value & Effect Drivers without information on options & pricing Drivers with information on options & pricing
- 36. Conclusion Essential Keys to Future Success Demand is balanced with supply The system is fully integrated User options (mode, time, space) are maximized and accessible Fees-for-service is the foundation It is not possible to predict the future It is possible to prepare for the future