Personal Mobility

In Japan, the police bear the responsibility of traffic management, and tackle many problems caused by road traffic, such as traffic accident, traffic congestion and environmental pollution,  using  traffic  management  technique  such  as  traffic  regulation  and  traffic  control.  For  this  traffic  management, NPA  (the  National  Police  Agency) planned UTMS21  (Universal  Traffic  Management  System  21)  and  is  installing  it  nationwide  as  one  of  ITS  (the  Intelligent  Transport System) in our country.  The  UTMS21  consists  of  10  subsystems,  centering  around  ITCS  (Integrated  Transportation System). The PICS (Pedestrian Information and Communication Systems) introduced in this paper is also one of the subsystems of UTMS21.

PICS is intended to provide information through  voice and image, in addition to the  conventional function of Audible Traffic Signals, Weak-actuated  Traffic Signals and Pedestrian-actuated  Traffic  Signals.  By these functions, PICS will provide the pedestrians with safe, convenient and comfortable mobility and help people expand the area of travel.

The National Police Agency, Japan - Traffic Regulation Section, Traffic Bureau

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

The ACAS integration of FCW and ACC stands to have a major influence on the driving process, from the viewpoint of safety, convenience, and traffic flow.

The ACAS FOT will study the naturalistic use of this sophisticated driver assistance technology in diverse traffic and road environments by laypersons.

By means of a massive program of subjective and objective measurements, an authoritative set of results and findings is expected.

University of Michigan Transportation Research Institute (UMTRI)

Presented at the ITS America Annual Conference and Exposition, April 29 –May 2, 2002 Long Beach, California

Effects of Advanced Traveler Information System (ATIS) information on driver en-route decision making were explored through the use of a real-time trip simulator which used computer-controlled video sequences of actual traffic scenes to preserve important real-world cues, and provided a range of ATIS display capabilities (navigation displays, route guidance, traffic and hazard warnings, etc.) using a touch-screen panel to enable en-route navigation decisions to be studied under realistic settings. Seventy-two locally familiar drivers, ranging in age from 18 to 86 years of age, took part in the study. The sample was equally divided between males and females. A network of freeways and surface streets were simulated and available to drivers to navigate to their destination. These trips were fully under the control of the driver in terms of route selection and were experienced in real-time under realistic time pressures.

Westat

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

Travel time estimates are a valuable component of Advanced Traveler Information Systems
and have been shown to be of great use to the traveling public. However, such estimates must
be accurate to be useful. In addition, travel time estimates should not be provided when one
can reasonably infer that they are likely to be inaccurate. This paper uses a large data set,
gathered in a previous travel time validation project, to study methods for real-time
identification of inaccurate travel time estimates. In addition, the paper evaluates the effect of
influence area adjustments and the length of the input data window on travel time estimation
accuracy.

Portland State University

Oregon Department of Transportation

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

This paper examines the accuracy of traffic information generated by a commercial traffic
monitoring system using anonymous tracking of cellular phones to generate roadway speed
information. The calculated speeds from the cell phone floating car probe system were
compared to two alternate sources of speed measurements; inductive loops for speeds on
freeways, and GPS equipped test vehicles for speeds on surface streets. The Traffic
Measurement System (TMS) was tested in Toronto and generated speed data which was
closely correlated with speeds measured by inductive loop detectors and with speeds
calculated from travel times of GPS equipped test vehicles. For both freeways and surface
streets under congested and uncongested conditions, the system produce speeds with better
than 85% average absolute accuracy and better then 95% average accuracy in all categories.

Intellione Technologies

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