PATH

Integration of Fault Detection and Identification into a Fault Tolerant Automated Highway System

Douglas, Randal K.
Chung, Walter H.
Malladi, Durga P.
Chen, Robert H.
Speyer, Jason L.
Mingori, D. Lewis
1997

This work focuses on vehicle fault detection and identification. It also describes a vehicle health management approach based on analytic redundancy. It describes a point design of fault detection filters and parity equations that are developed for the vehicle longitudinal mode. A preliminary design of a range sensor fault monitoring system is outlined as an application of a new decentralized fault detection filter. This system combines dynamic state information already generated by the existing filter designs with inter-vehicle analytic redundancy

Integrated Maneuvering Control Design and Experiments: Phase II

Hedrick, J. K.
Pantarotto, M.
Yoshioka, T.
Chen, Y.
Connolly, T.
Narendran, V. K.
1996

This report begins with an examination of autonomous lateral vehicle control. This is followed by a section on Cooperative Intelligent Cruise Control (CICC). The effect of communication delays on the control performance of vehicle platoons is then examined. The report concludes with a study of the three basic transition maneuvers in an Automated Highway System: join, split, and lane change.

Integrated Maneuvering Control Design and Experiments: Report for Phase III

Hedrick, J. K.
Yoshioka, T.
Chen, Y. H.
Connolly, T.
Shen, L. R.
1997

In this report, a Cooperative Intelligent Cruise Control (CICC) System is proposed to increase highway capacity and provide safety and comfort to drivers. The method requires an automatic throttle and brake control and simple infrastructure-vehicle communication. The system is designed to let a vehicle operate under a conventional cruise control system as well as a distancing control system. The performance of the CICC is evaluated through simulations with a non-linear vehicle model.

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...

Implementing a Dynamic O-D Estimation Algorithm within the Microscopic Traffic Simulator Paramics

Garcia, Reinaldo C.
2002

California has long recognized the potential for applying electronic and other transportation systems technologies to address the significant mobility and economic challenges in the state,and the rest of the nation.Through an aggressive Advanced Transportation Systems Program,Intelligent Transportation Systems (ITS)are being researched,built,and tested for deployment.These ITS will address today s transportation needs and those of the twenty-first century.An important element of this program is the California Advanced Transportation Management Systems Testbed (California ATMS Testbed)...

Impacts of Smart Cards on Transit Operators: Evaluation of I-110 Corridor Smart Card Demonstration Project

Chira-Chavala, Ted
Coifman, Benjamin
1996

This report presents the evaluation of the first transit smart card demonstration in California. The study assesses the cost and benefit implications of the smart card system to transit agencies. Two types of smart cards were used: radio frequency (RF) proximity and contact. The assessment of the cost and productivity impacts, as well as the perceptions of transit personnel, were accomplished through personnel interviews and independent onboard observations.

Identification and Prioritization of Environmentally Beneficial Intelligent Transportation Technologies

Shaheen, S.
Young, T.
Sperling, D.
Jordan, D.
Horan, T.
1998

This report presents an literature review on the energy and environmental impacts of Intelligent Transportation Systems (ITS) technologies, a presentation of the development of deployment/modeling scenarios, and a description of the modeling effort. It looks at the current polity context and regulatory arena in which ITS technologies will be deployed. It also provides scenarios and market penetration estimates developed to form the basis of modeling efforts with the INTEGRATION model.

Highway Electrification and Automation Technologies - Regional Impacts Analysis Project: Phase III: Impacts Analysis Results

Scag
Path
1993

This report presents the third, and final, phase of the Highway Electrification and Automation Technologies Regional Impacts Analysis Project (HE&A). The focus of Phase III report is the assessment of regional impacts associated with application of roadway electrification, and automation technologies to selected freeway sections in the Southern California region.

Highway Electrification and Automation Technologies - Regional Impacts Analysis Project: Executive Summary

Scag
Path
1993

The Highway Electrification and Automation Technologies Regional Impacts Analysis Project (HE&A) addressed the transportation-related problems of freeway congestion, air pollution, and dependence on fossil fuels in southern California. The impacts of roadway electrification and highway automation were investigated to determine to what extent these advanced technologies could alleviate these problems. For the highway electrification technology, utility, environmental, and economic impacts were also studied. The feasibility of implementing one or more demonstrations in the six-county...

Highway Electrification and Automation Technologies - Regional Impacts Analysis Project: Phase I: Baseline Scenario Data Analysis

Scag
Path
1993

The Highway Electrification and Automation Technologies Regional Impacts Analysis Project addresses the transportation-related problems of freeway congestion, air pollution, and dependence on fossil fuels in southern California. This report presents a documentation of the basis for the impacts analysis. It contains sections on data collected, baseline forecast for 2025, and electrification and automation specification scenarios. This report constitutes the final report for Phase I of the project.