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The term Intelligent Transportation Systems (ITS) was coined over two decades ago to designate applications of information and communication technologies to the operational management of transportation networks. The main promise of ITS has been very consistent over that period: network capacity can be freed up by optimizing traffic controls and empowering users with accurate travel information. It can be debated how much faith practitioners and policy makers have placed in technology by investing their resources, as well as the extent to which Intelligent Transportation Systems have delivered on their promise. However, there is no question that steady and sometimes spectacular advances in computing technologies and usage trickle down to transportation applications in important ways. As a result, new products and services emerge continuously. They include systems that address the direct needs of networks managers, as well as others that are developed in tangential markets (e.g. automotive) or even through non-market mechanisms (e.g. many mobile web applications). This talk presentation reviews major trends in information and communication technologies and demonstrate how each of them is driving innovative transportation services. We attempt to envision how those trends might develop in the future, so that we can finally examine some of their implications for travel demand and network management. There lie both challenges and opportunities for transportation engineers and planners, but either way, profound changes appear inevitable.
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Intelligent Transportation Trends and Perspectives
2011
J.D. Margulici
www.novaviasolutions.com
Chapter 2: System Management
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ITS primer and brief history
State of the art: system management
Information technology trends
Prospective and implications
J.D. Margulici
www.novaviasolutions.com
Intelligent Transportation
Trends and Perspectives
2011
New Foundations: System Management
ITS Trends and Perspectives - April 2011 3
Networks System Management in the 21st C.
Demand Management
• Integrated Pricing
• Vehicle Occupancy
• Parking Policies
Traffic Flow Management
• Signals, Ramp Meters
• Variable Speeds
• Dynamic Routing & Lane Assignments
Travel Information
• All Modes
• Everywhere
• Anytime
Incident Management
• Detection & Clearing
• Resilient Networks
• Traffic Adaptation
ITS Trends and Perspectives - April 2011 4
Smooth operations: information, control and demand management squeeze out traffic variability
Time is money: individuals make their own trade-offs between time and price
Driven by success: Infrastructure planning is based on objective operational performance
SMARTER, GREENER, CHEAPER
Potential Pay-Off in one Picture…
0
10
20
30
40
50
60
70
80
1:00 PM 2:00 PM 3:00 PM 4:00 PM 5:00 PM 6:00 PM 7:00 PM 8:00 PM 9:00 PM
Time of Day
Sp
eed
0
250
500
750
1,000
1,250
1,500
1,750
2,000
Veh
icle
s p
er
Ho
ur
per
Lan
e (
vp
hp
l)
Lost Productivity
As speeds drop, flow rates diminish significantly
I-405 SB
Postmile 31.93
Los Angeles
10/19/2001
ITS Trends and Perspectives - April 2011 5
Source: Performance Measurement System (PeMS) – October 2001 / Systems Metrics Group
Vphpl: volume per lane per hour
Active Traffic Management: Premises
ITS Trends and Perspectives - April 2011 6
Traffic Flows
Measure
Assess
Control Analyze
Design
Deploy
Policies Outcomes
Strategic Loop
Tactical Loop
Policy Loop
Active Traffic Management: Implementation
ITS Trends and Perspectives - April 2011 7
Australia’s Eastern Freeway
Integrated Corridor Concept: I-80
Surveillance and Monitoring
Adaptive Ramp Metering
Traveler Information system
Incident Management system
Arterial and Transit Management systems
Variable Speed Limit signs
Potential Hard Shoulder Running
Commercial Vehicle Operation system
ITS Trends and Perspectives - April 2011 8
Corridor Management Plans
ITS Trends and Perspectives - April 2011 9
Base Performance Assessment (PeMS, TASAS, Other)
Bottleneck Identification (HICOMP, PeMS, Aerial
Photographs, CHP Logs, Other)
Future Performance
(Micro-Simulation, Regional Models)
Improvement Scenarios
Planned, Programmed and
other Improvements
Scenario Performance Evaluation
(Micro and Meso Models)
Recommendations and Performance
Improvement Estimates
Bay Area Performance-Based Planning & Programming
ITS Trends and Perspectives - April 2011 10
Road User Charges – Price Discrimination
ITS Trends and Perspectives - April 2011 11
Cordon Pricing
ITS Trends and Perspectives - April 2011 12
San Francisco’s Transportation Pricing
ITS Trends and Perspectives - April 2011 13
AM/PM Cordon
PM-Only Cordon
Intelligent Transportation Trends and Perspectives
2011
J.D. Margulici
www.novaviasolutions.com
Next is Chapter 3: Traffic Monitoring
