PATH

Evaluation of the Anaheim Advanced Traffic Control System Field Operational Test: Introduction and Task A: Evaluation of SCOOT Performance

Moore, James E., II
Jayakrishnan, R.
McNally, M. G.
MacCarley, C. Arthur
1999

This report provides an overview of the federally-sponsored Anaheim Advanced Traffic Control System Field Operations Test, and of the technical issues associated with the evaluation of SCOOT performance during this test. The primary FOT objective was the implementation and performance evaluation of adaptive traffic signal control technologies including an existing second generation approach, SCOOT, and a 1.5 generation control (1.5GC) approach under development. Also selected for implementation was a video traffic detection system (VTDS). The SCOOT evaluation was defined relative to...

Longitudinal Control Of A Platoon Of Vehicles. I, Linear Model (ucb/erl M89/106)

Sheikholeslam, Shahab
Desoer, Charles A.
1989

This paper presents a systematic analysis of a longitudinal control law of a platoon of vehicles using a linear model to represent the vehicle dynamics of each vehicle within the platoon. The basic idea is to take full advantage of recent advances in communication and measurement and using these advances in longitudinal control of a platoon of vehicles.

SmartBRT: A Set of Planning, Analysis and Evaluation Tools for Bus Rapid Transit: Final Report Year 1 of 2

Balvanyos, Tunde
Bethel, Wes
Gardes, Yonnel
Kourjanskaia, Natalia
Liu, Hongchao
Misener, Jim
Sousa, Joao
Vander Werf, Joel
Wei, Wenbin
2003

We report Year 1 results from a two-year project to develop a computer simulation, evaluation and visualization "toolbox", SmartBRT, to describe and evaluate operational aspects of bus rapid transit (BRT) concepts in order to aid decision-making. In conceiving and developing SmartBRT, we have maintained two objectives: 1. To provide FTA, Caltrans and local decision-makers with a rigorous and defensible, yet intuitive BRT operation evaluation method along with a general purpose BRT simulator/communication tool; and 2. To provide example applications of SmartBRT to actual BRT concepts and to...

Fault Detection and Handling for Longitudinal Control

Yi, Jingang
Howell, Adam
Horowitz, Roberto
Hedrick, Karl
Alvarez, Luis
2001

The purpose of this project is to extend and integrate existing results on fault diagnostics and fault management for passenger vehicles used in automated highway systems (AHS). These re-sults have been combined to form a fault diagnostic and management system for the longitudinal control system of the automated vehicles which has a heirarchical framework that complements the established PATH control system. Furthermore, the fault diagnostic module effectively mon-itors all of the sensors and actuators required for longitudinal control, while the fault handling module corrects for any...

The Naturalistic Driver Model: A Review of Distraction, Impairment and Emergency Factors

Caird, J.K.
Lees, M.
Edwards, C.
2005

The purpose of this project is to review the literature on driver distraction, impairment and emergency response that supports the development of the Naturalistic Driver Model. Driver models that are based on high-quality empirical research are more likely to serve as a useful and valid tool to professionals and researchers.

Estimating Pedestrian Accident Exposure

Greene-Roesel, Ryan
Diogenes, Mara Chagas
Ragland, David D.
2010

We are pleased to present the final report of Caltrans Task Orders 5211 and 6211, “Estimating Pedestrian Accident Exposure.” The project focused on defining pedestrian exposure and evaluating methods for measuring it within the State of California. The project was funded by the California Department of Transportation as part of the California Partners for Advanced Transit and Highways (PATH) Program of the University of California.Deliverables associated with the project include (I) a protocol report on assessing pedestrian exposure, which is accompanied by a training curriculum and an...

Evaluation Of The Transit Information System In Southern California

Le Colletter, Emmanuel
Yim, Youngbin
Hall, Randolph
1993

This report presents a study of the effectiveness of the transit telephone information system on trip behavior at Metropolitan Transit Authority ( MTA), from both the user's and the operator's perspective. The objectives of the experiment were: 1) to assess the perception of dynamic transit information service, 2) to identify the media which can most effectively disseminate transit information, and 3) to compare the information service by human operators with the service by an automated system. The study looks at both the supply and the demand side of the provision of telephone information...

A Decision-Oriented Framework for Evaluating Deployment Strategies for Intelligent Transportation Systems

Tsao, Jacob H.-S.
1999

Because Intelligent Transportation Systems (ITS) R&D is performed for the ultimate deployment in the real world, deployment issues may limit design options for ITS concepts and technologies and, hence, can be viewed as constraints on ITS R&D. Therefore, ITS deployment issues must be studied at the outset of the R&D process. This paper develops a framework to help recognize and organize such issues. The findings can be used by ITS researchers in developing deployable ITS concepts and technologies and by ITS promoters in deploying ITS technologies having been...

Commercial Motor Vehicles' Safety - A California Perspective

Giuliano, Gen
Zhou, Jiangping
McFerrin, Peter
Miller, Mark A.
2010

This report presents the findings of an examination of commercial motor vehicle crashes in California. Initially, a review of the basic descriptive statistics associated with truck-involved crashes in California was conducted; it covered the time period between January 1995 and December 2004 based on the Statewide Incident Tracking and Reporting System (SWITRS) data base, which contains information about every single motor vehicle accident in the state reported to a law enforcement agency. In addition to examinations of the entire population of truck-involved crashes in the state over the...

Cooperative Adaptive Cruise Control: Testing Drivers’ Choices of Following Distances

Nowakowski, Christopher
Shladover, Steven E.
Cody, Delphine
Bu, Fanping
O’Connell, Jessica
Spring, John
Dickey, Susan
Nelson, David
2010

A Cooperative Adaptive Cruise Control (CACC) system has been developed by adding a wireless vehicle-vehicle communication system and new control logic to an existing commercially available adaptive cruise control (ACC) system. The CACC is intended to enhance the vehicle-following capabilities of ACC so that drivers will be comfortable using it at shorter vehicle-following gaps than ACC. This can offer a significant opportunity to increase traffic flow density and efficiency without compromising safety or expanding roadway infrastructure.This report describes the design and implementation...