PATH

Experimental Automatic Lateral Control System for an Automobile

Peng, Huei
Zhang, Wei-bin
Arai, Alan
Lin, Ye
Hessburg, Thomas
Devlin, Peter
Tomizuka, Masayoshi
Shladover, Steven
1992

This report summarizes an experimental effort in integrating and testing an automated vehicle lateral control system. The project, a cooperative effort between the California Partners for Advanced Transit and Highway ( PATH) Program and IMRA America, Inc., included a discrete roadway reference system, on-vehicle magnetic sensing system, a computer control system and a hydraulic actuator.

Evaluation of the Freeway Service Patrol (FSP) in Los Angeles

Skabardonis, Alexander
Petty, Karl
Varaiya, Pravin
Bertini, Robert
1998

This report presents the results of a study designed to evaluate the effectiveness of the freeway service patrols (FSP) on a section of I-10 in Los Angeles. An evaluation methodology was used to estimate incident delays based on loop detector data and probe vehicles, and derive estimates of savings in performance measures in the absence of data for before FSP conditions. The estimated benefit cost ratios based on delay and fuel savings for a range of typical reductions in incident durations indicate that FSP produces significant benefits at the test site. Additional benefits include...

Evaluation of Potential Hybrid Electric Vehicle Applications: Vol I

Gris, Arturo E.
1991

Identifies potentially promising market segments for electric and hybrid vehicle technologies; covers topics including energy and power requirements, battery and range extender, propulsion system, and air conditioning

Evaluation of Potential Hybrid Electric Vehicle Applications: Vol. II

Gris, Arturo
1991

Identifies potentially promising market segments for electric and hybrid vehicle technologies; covers topics including energy and power requirements, battery and range extender, propulsion system, and air conditioning

Evaluation of Mixed Automated/Manual Traffic

Ioannou, Petros
1998

The advance in research and development will make the deployment of automated vehicles a reality in the near future. The principal question is whether these technologies will lead to any benefits in terms of safety, capacity and traffic flow characteristics as they penetrate the current transportation system. Another aspect is how to exploit these technologies in order to achieve benefits without adversely affecting the efficiency of the current transportation system and the drivers who cannot afford them. The penetration of automated vehicles into the existing transportation system will...

Evaluation of ITS Technology for Bus Timed Transfers

Hall, Randolph
Dessouky, Maged
Nowroozi, Ali
Singh, A.
1997

This paper evaluates dispatching rules at timed transfer transit terminals. The evaluation focuses on total passenger delay and the number of passengers missing their connections. Analytical and simulation models are developed to evaluate the benefit of Intelligent Transportation Systems (ITS) applications. The authors conclude that the benefit of ITS for timed transfer alone does not justify the implementation of Global Positioning Systems (GPS) for bus tracking technology.

Evaluation and Analysis of Automated Highway System Concepts and Architectures

Ioannou, Petros
1998

This is the final report for the project entitled \Evaluation and Analysis of Automated Highway System Concepts and Architectures" in response to the contractual requirements of the Memorandum of Understanding MOU# 235, between the Partners of Advanced Transit and Highways (PATH) and the University of Southern California, administered at the University of Califor- nia at Berkeley. The purpose of this project was to select, evaluate and analyze a num- ber of promising Automated Highway System (AHS) operational concepts based on previous work. The evaluation and analysis includes headway dis...

Evaluation of Highway Bottlenecks

Hall, Randolph W.
Kamoun, Mahdi
1991

This is the final report of the PATH research project "Bottleneck Evaluation Model." The goal of the project was to develop a computer tool for evaluating capacity and travel time benefits of PATH improvements. The Bottleneck Traffic Simulator (BTS) is used to investigate the time benefits of changes in highway design and operation. Key issues include the effects of (1) highway reliability, in the form of incident frequency, duration and reliability; and (2) changes in traveler behavior, in the forms of arrival time choice and reneging.

Evaluation Framework for Commercial Vehicle Responses to Congestion Pricing

Wachs, Martin
Kawamura, Kazuya
1997

This report presents a short-run framework for analyzing the impacts of congestion pricing on commercial vehicles. The framework is based on microeconomics principles and past theoretical studies of congestion pricing. The relationship between value of time and the welfare gain/loss induced by using congestion pricing is identified. The social cost function and empirical demand and supply functions are also discussed.

Estimation of Travel Time Distribution and Detection of Incidents Based on Automatic Vehicle Classification

Anatharam, V.
1998

We study the problem of travel time estimation along a section of a freeway based on data derived from vehicle detectors at multiple locations. We pose the problem as one of pattern recognition. We derive algorithms that aim to recognize patterns which persist between the error-prone upstream detector samples and the error-prone downstream detector samples. We describe how these can allow us to estimate the distribution of the travel time between these detector locations. The most promising algorithm derived in this research is a dynamic programming based algorithm based on sequence...