Personal Mobility

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

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

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

Real-time transit passenger information systems are intended to improve the level of service provided by transit agencies. Such systems provide real-time information on when buses on specified routes are expected to arrive to a bus stop. Although such information is assumed to be of benefit, methods for evaluating these benefits under various conditions are limited. This paper expands upon the functionality and application of an evaluation methodology recently developed by the authors. The methodology focuses on the potential benefits of bus arrival information systems to passengers waiting at bus stops under various supply and demand characteristics. Transit bus operations and passenger arrivals are modeled as a stochastic system where the operator uses real-time bus location data to provide to waiting passengers bus arrival time information that maximizes passengers’ utilities. Simulation results reveal the nature of the dependence of the value of such information systems on the type of real-time data available to the operator, bus operations characteristics, and demand patterns. These results indicate that while the first two influence the value of information to passengers, demand patterns do not have a significant impact.

Rabi G. Mishalani, Mark R. McCord, and Sungjoon Lee

Presented at the 10th ITS Annual Conference and Exposition, May 1-4, 2000 Boston, MA

Increasing awareness levels of the average motorist to the ever changing traffic
conditions encountered on an interstate highway system prepares them for their trip, thus
improving the mobility of people and goods regionally and nationally. Knowledge of
traffic conditions and travel times in advance of travel provides the motorist with
valuable information and allows them an option that is unavailable to the uninformed
motorist. Alert motorists can react with confidence to known situations or decide to take
an alternate route. The net result, informed motorists react better to situations that are
known in advance and in turn, can reduce or eliminate potential crashes or gridlock.

National Engineering Technology Corp.

Illinois State Toll Highway Authority

Illinois Department of Transportation

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