Infrastructure

Feasibility Study for the Use of Biodiesel in the Caltrans Fleet

Miller, J. Wayne
Durbin, Thomas D.
2009

Over the past several years, biodiesel use has dramatically increased due to its potential emissions benefits, classification as a low-carbon/renewable fuel and ability to be integrated into diesel fleet applications without significant infrastructure or other substitution issues. Caltrans has largest fleet in California, so biodiesel would provide many benefits in terms of meeting environmental and energy security objectives. However, all aspects of biodiesel use needed to be thoroughly investigated, including potential benefits and liabilities, prior to widespread introduction into the...

Vehicle Following Control Design for Automated Highway Systems

Raza, H.
Ioannou, P.
1997

Automatic vehicle following is an important feature of a fully or partially automated highway system (AHS). The on-board vehicle control system should be able to accept and process inputs from the driver, the infrastructure and other vehicles, perform diagnostics and provide the appropriate commands to actuators so that the resulting motion of the vehicle is safe and compatible with the AHS objectives. The purpose of this paper is to design and test a vehicle control system in order to achieve full vehicle automation in the longitudinal direction for several modes of operation, where the...

Studies of Road Infrastructure Requirements for Small Innovative Vehicles

Garrison, William L.
1993

This is the final report of Phase I studies of road infrastructure requirements for small innovative highway vehicles. Project reports previously published provide statements of approaches and findings, and these provide the basis for the present report which strives for clarification-stocktaking objectives. This study was triggered by General Motors Corporation investigations of the feasibility of marketing a relatively inexpensive single occupant, high performance, fuel efficient vehicle known as the Lean Machine.

Bay Area ATIS Testbed Plan

Khattak, Asad
Al-Deek, Haitham
Yim, Youngbin
Hall, Randolf
1992

Several factors have motivated the development of Intelligent Vehicle Highway Systems (IVHS); among them are growing traffic congestion, concern for environmental degradation, the need to improve safety, and the desire to best utilize existing transportation infrastructure. Within the framework of M-IS, Advanced Traveler Information Systems (ATIS) will provide historical, real-time and predictive information to support travel decisions. ATIS offers significant benefits interms of improving the travel experience of individuals and enhancing system performance. In the long-term, ATIS may...

Spectrum Needs for IVHS

Linnartz, Jean-paul M. G.
Walrand, Jean
1993

This report summarizes the need for (dedicated) radio spectrum for IVHS communication services. It concludes that, if efficient architectures can be developed, several MHz of spectrum will be needed for large-scale introduction of IVHS services. Compared to most other reported estimates of the spectrum requirements, this report gives a more detailed discussion of the relation between message volume (bit/sec), the required grade of service and spectral bandwidth (Hz).

Sketch of an IVHS Systems Architecture

Varaiya, P. P.
Shladover, Steven E.
1991

Presents a sketch of a system architecture for the control and management tasks of an intelligent vehicle/highway system (IVHS)

Message Volumes for Two Examples of Automated Freeway

Hitchcock, Anthony
1993

In this paper, calculations are made of the volume of messages transmitted between vehicles or between vehicles and the infrastructure, in order to estimate the demand of advanced vehicle control systems (AVCS) for frequency allocations. Two previous conceptual designs for an automated freeway are used to provide a basis for calculations.

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.

GPS/ INS Based Lateral and Longitudinal Control Demonstration: Final Report

Farrell, Jay
Barth, Matthew
Galijan, Randy
Sinko, Jim
1998

This report describes the results of a one year effort to implement and analyze the performance of a Differ- ential Global Positioning System (DGPS) aided Inertial Navigation System (INS) for possible future use in Advanced Vehicle Control Systems (AVCS). The initial premise of this project was that DGPS/INS technology has the potential to serve as a centimeter-level position reference system as necessary for automated driving functions. Key advantages of this approach include: 1) no changes to the highway infrastructure are required; therefore, the DGPS/INS system should be less expensive...

Fault Tree Analysis of an Automated Freeway with Vehicle-borne Intelligence

Hitchcock, Anthony
2004

This report summarizes research work conducted under TO4143 at the California PATH ATMS Center at the University of California, Irvine. This project has two tasks: Functionality enhancements of the PARAMICS simulation model through API programming for the on-line simulation application; On-line data fusion algorithm for a better section travel time estimation based on point detector data and probe vehicle data. In order to conduct these two tasks, we complete the following two related studies, which are the basis of the two tasks of this project: Development of the capability-enhanced...