Personal Mobility

This paper reports on recent developments brought about in the area of freeway travel time
measurement based on the innovative use of Bluetooth signatures in an automatic vehicle
identification setting. The concept of using Bluetooth signatures for travel time estimation along
a section of freeway is explained. Issues related to filtering raw matched data and accuracy of the resulting “ground-truth” are addressed. Capabilities and limitations of an existing adaptive
exponential smoothing methodology in extracting accurate travel time estimates in real-time are
examined.

University of Maryland, College Park

Paper submitted for publication and presentation at the ITS America’s 2009 Annual Meeting and Exposition

Travel times for the freeway systems in Houston, Texas are computed using information from Automatic Vehicle Identification (AVI) sensors which read Radio Frequency Identification (RFID) tags issued by the local tolling authority. Demonstrations were conducted to determine the feasibility of utilizing anonymous wireless address matching (Bluetooth) as an alternative to RFID readers for the determination of link travel times on an urban arterial where tag penetration of the overall traffic might not be as great as on freeways. This paper is the result of that demonstration in February and March of 2009.

Texas Transportation Institute

Paper submitted for publication and presentation at the ITS America’s 2009 Annual Meeting and Exposition

The El Segundo Area ITS Project is a unique collaboration between public and private
agencies resulting in the implementation of a multi-jurisdictional Advanced Traveler Information
System ("ATIS"). To date, the ATIS includes a suite of services -- telephone, Internet, and Cable
TV dissemination – focusing on the freeway segments of the Southern California region using
data provided by the State of California. The next logical step is to begin providing traveler
information for the arterial elements of the project. The LA County Department of Public Works,
working with Iteris, Inc., has looked at several potential solutions for obtaining real-time arterial
travel time and speed data, focusing primarily on “probe-based” solutions (GPS, cell phone,
Bluetooth). The analysis and comparison of these alternatives considered several factors,
including coverage, expandability, compatibility with the preliminary link-node configuration,
accuracy, and cost. Based on these analyses, the recommended approach is to use a private
information service provider as the primary source of real-time arterial traffic flow data, and use
Bluetooth readers as needed to fill in any gaps (e.g., lack of coverage, further segmentation of the TMC links).

Los Angeles County Department of Public Works

Presented at the ITS America Annual Conference and Exposition, May 3-5, 2010, Houston, Texas

The United Kingdom has deployed innovative strategies as part of their ITS program. These
strategies include active traffic management, congestion pricing, multimodal traveler information
web sites, integrated demand management, etc. The purpose of this paper is to review the best
practices and lessons learned from their experiences for possible application in the United States.

AECOM USA, Inc.

Presented at the ITS America Annual Conference and Exposition, May 3-5, 2010, Houston, Texas

This paper describes the application of systems engineering (SE) to a major innovative
transportation project in the San Francisco Bay Area, the Interstate 80 (I-80) Integrated
Corridor Mobility (ICM) Project. In addition to being one of the first applications of Active
Traffic Management (ATM) to a freeway corridor in the U.S.A., it is also one of the first
detailed applications of formal SE processes to a major highway traffic management project
in the U.S.A.

DKS Associates

Presented at the ITS America Annual Conference and Exposition, May 3-5, 2010, Houston, Texas