Intelligent Transportation Systems

Application of Decision Analysis to Intelligent Transportation System Societal Issues. Final Report, 15 March 1996-14 March 1997

Richardson, BC
Albers, WA
Kostyniuk, LP
Barnes, MA
Rodriguez, DA
1997

A demonstration of the use of decision analysis to address societal and institutional issues in an Intelligent Transportation System-based paratransit implementation was performed. A decision analysis technique called Multi-Organization Decision Analysis (MODA) was developed, and it is based on the Decision Risk Analysis process used widely in the private sector. Its objective is to facilitate consensus among the disparate public and private sector stakeholders in a decision process. The stakeholders are represented on a decision-making team, and they are supported by a team of...

Potential Payoffs From Ivhs: A Framework For Analysis Appendix C

Rockwell International Science Center
1992

This Appendix documents the details of the Intelligent Vehicle Highway Systems (IVHS) benefit analysis DEMOS models and provides the PATH user information about what is contained in and how to use the models. The object of this study was to structure an approach to evaluate the relationships of the top-level IVHS goals to the implementable actions and assess the relative benefits of those actions. The DEMOS model has been used as a tool to analyze selected IVHS actions with the goal of determining the key driving parameters through the use of sensitivity analysis.

PLANTiS: Organization And Integration Of Modules

Paramsothy, Thananjeyan
Khattak, Asad
Lovell, David
Kanafani, Adib
1995

This paper discusses the integration of PLANiTS (Planning and Analysis Integration for Intelligent Transportation Systems) components. The integration is achieved by defining a structure for representing transportation improvement actions, performance measures and environment in terms of spatial, temporal and user dimensions. A discussion is also presented on the key issues related to computer implementation including data dimension, a data dictionary, data modeling, and data transformations. A basis is developed for the next implementation of PLANiTS.

Regional Intelligent Transportation Systems Architectures and the Competitive Region

Rodriguez, DA
Muñoz-Loustaunau, A
Pendleton, T
Sussman, JM
1998

The role of an architecture for deploying intelligent transportation systems in finding solutions to regional transportation problems is analyzed. The concept of a competitive region, a region with changing economic interests, stakeholders, and borders, is reviewed. The competitive region motivates finding solutions to transportation problems of regional scope. The concept of a regional system architecture is then introduced as a catalyst for reaching coordinated regional solutions. The regional architecture’s flexibility and ability to bring different stakeholders together make it...

Why Its Projects Should Be Small, Local And Private

Weissenberger, Stein
1998

In this paper, the author contends that in order to produce and capture useful knowledge, early Intelligent Transportation Systems (ITS) projects should be local, small, and focused on realistic goals. The importance of cooperative networks that support knowledge acquisition and diffusion is stressed. Additionally, the author promotes the usage of private industry, especially to perform tasks for which they are best qualified.

Integrating a Comprehensive Modal Emissions Model into ATMIS Transportation Modeling Frameworks

Barth, Matthew
Malcom, Carrie
Scora, George
2001

Intelligent Transportation Systems (ITS) have generated considerable enthusiasm in the transportation community as a potential means to improve roadway safety, reduce congestion, enhance the mobility of people and goods, and reduce energy consumption and vehicle emissions. In order to estimate these potential benefits, new and improved analytical techniques and simulation models are being developed for ITS. In terms of environmental effects, the University of California, Riverside, College of Engineering-Center for Environmental Research and Technology (CE-CERT) has developed a...

Evaluation Of The Advanced Operating System Of The Ann Arbor Transportation Authority: Impacts of an Advanced Public Transportation System: Demonstration Project

Levine, J
Hong, Q
Hug, GE
Rodriguez, D
1999
In 1997, the Ann Arbor (Michigan) Transportation Authority began deploying a set of integrated advanced public transportation system technologies in its vehicles, stations and control center. This paper summarizes selected findings of a multidimensional evaluation of the effects of the system on schedule adherence and transfer time, passenger perception and impacts on drivers. Some improvement in on-time performance was observed in vehicle departures from major ...

Portable Global Positioning units to Complement Accelerometry-based Physical Activity Monitors

Rodriguez, DA
Brown, AL
Troped, PJ
2005

This study examines the usefulness of complementing accelerometry-based physical activity measurement with spatial data from portable global positioning system (GPS) units to determine where physical activity occurs. Methods: First, using the geographic distribution of data points and Bland–Altman plots, we examined GPS units’ validity and interunit reliability by measuring the distance to a geodetic point. We also assessed interunit reliability by comparing GPS data collected in three built environment contexts. Second, we conducted a pilot study in which 35 participants wore GPS units...

Improving Transit Performance With Advanced Public Transportation System Technologies

Hansen, Mark
Qureshi, Mohammad
Rydzewski, Daniel
1994

This report identifies opportunities to improve transit performance using Advanced Public Transportation System (APTS) Technologies, assesses transit operator viewpoints on and experiences with APTS technologies, and proposes how current adoption and utilization practices might be improved so that these technologies are used in a more efficient and effective manner. The study focuses on the attitudes and experiences of individual transit agency management, staff, and line personnel that are likely to determine their future choices with regard to APTS adoption and utilization. The research...

Evaluation of Magnetic Markers as a Position Reference System for Ground Vehicle Guidance and Control

Chan, Ching-Yao
Tan, Han-Shue
2003

This report contains an evaluation of the sensing techniques and implementation issues of magnetic sensing as a position reference system. The field patterns of sample magnetic markers were first measured to illustrate the basic characteristics of such systems. Several sensing approaches were explained and compared with regard to their functioning principles and sensitivity to measurement variations. Three particular algorithms were discussed with illustrations of respective mapping methods. Robustness and sensitivity of the sensing methods, when subject to signal noises and parameter...