Personal Mobility

Intelligent transportation systems (ITS) provide the surveillance infrastructure for both advanced transportation management and advanced traveler information.  Having shifted toward a much more intensified data rich environment, it is now possible to consider automatically generating mobility measures as part of an overall traffic management and information system.  Many regions use inductive loop detector technology for measuring key traffic parameters such as flow, occupancy and average speed.  Mobility-related measures can be produced from these data including vehicle miles traveled, vehicle hours traveled, average speed, travel time, delay and other nationally accepted parameters that measure transportation system performance.  The Portland, Oregon metropolitan region is developing a system to automate the generation of mobility measures using inductive loop detector data.   In this paper, we describe a rigorous, microscopic validation process that has been developed to validate the inductive loop detector data using ground truth video.  In addition, we present several methods for converting the validated data to useful visualizations which are helpful for transportation management and operations.

Portland State University

Presented at the ITS America Annual Conference and Exposition, April 26 - 28, 2004 San Antonio, Texas

This paper presents problems identified in the conventional traffic information boards and
the implementation of cellular based traffic information system. We have just started to
implement the cellular phone system in order to provide our customers with timely,
accurate and reliable information as a responsibility of a road administrator, while the
traffic information service by the use of cellular phone had started among private sectors a
few years ago in Japan. The system will be expected to have ubiquitous coverage for
information services and enable advanced traffic management.
The latest results of the evaluation and more gained experiences will be presented at New
York since the system is now under development and to be launched into the market this
summer.

West Nippon Expressway Company Limited (NEXCO West)

Presented at the 15th World Congress on Intelligent Transport Systems, November 16-20, 2008, New York, New York

Adaptive Cruise Control (ACC) is a standard product for passenger cars that can be bought from many manufacturers. ACC works for speeds higher than 30 kph and only under restricted conditions. The first part of this paper describes our TrafficJam Assistant (TJA) that extends ACC  functionality to velocities from 0 to 30 kph including fully automaticstop and go using Laserscanner  data. Safe automatic start of the vehicle is possible even in complex situations,e.g. with pedestrians crossing the road. The second part describes the extension of the traffic jam assistant into an actual full-speed-range ACC system.

IBEO Automobile Sensor GmbH

Presented at the 12th World Congress on Intelligent Transport Systems, November 6-10, 2005, San Francisco, California

Traffic Scotland has been providing real-time information on the Scottish trunk road network
since 1999. The service has been continually developing and improving to meet the demands
and needs of the public, network managers and stakeholders. Traffic Scotland has undergone
a number of significant enhancements. These have ranged from performance upgrades to
provide improved service and to ensure maximum availability and accessibility in times of
high demand; functionality developments to include journey time, traveller emission and
public transport information; expansion of the network coverage allowing access to more
CCTV images; inclusion of greater event specific information; user tailored data available
through a range of media; and the adoption of DATEX2.

IBI Group

Transport Scotland

Presented at the ITS America Annual Conference and Exposition, November 16-20, 2008, New York, New York

TransGuide, San Antonio's Intelligent Transportation System (ITS), has been in operation since July of 1995. Initially covering 26 miles of freeways, TransGuide has expanded to cover more than 60 miles of freeways throughout San Antonio. The expanded coverage of freeway conditions in San Antonio has been coupled with arterial traffic data to provide traffic information on over 150 miles of the San Antonio area roadway network. The San Antonio Model Deployment Initiative (MDI) expanded TransGuide system capabilities, and brought together traffic information from multiple agencies. Since the conclusion of the Model Deployment Initiative, the Texas Department of Transportation (TxDOT) has implemented new programs to build upon that program's success. Expansion of the TransGuide system on heavily congested freeway corridors outside of downtown allowed the benefits of the system to be available to drivers who did not encounter the TransGuide system when it was located only in the downtown area of San Antonio. The development of the MDI Data Server combined information from TxDOT, the City of San Antonio and VIA Metropolitan Transit Authority to form a single depository of traffic related information available to all local public agencies and private sector Information Service Providers (ISPs).

Texas DOT - TransGuide

Presented at the 11th ITS Annual Conference and Exposition, June 4-7, 2001 Miami Beach, Florida