PATH

Anonymous Vehicle Tracking for Real-Time Freeway and Arterial Street Performance Measurement

Ritchie, Stephen G.
Park, Seri
Oh, Cheol
Jeng, Shin-Ting (Cindy)
Tok, Andre
2005

This research involved an important extension of existing field-implemented and tested PATH research by the authors on individual vehicle reidentification, to develop methods for assessing freeway and arterial (and transit) system performance for the Caltrans PeMS (Performance Measurement System). PeMS has been adopted by Caltrans as the standard tool for assessing freeway system performance, but lacks capabilities for assessing arterial and transit system performance, and strategies that combine freeways, arterials and/or transit and commercial vehicle fleets. It was shown that the...

Transit Signal Priority Research Tools

Li, Yuwei
2008

This report addresses Transit Signal Priority (TSP) deployment issues. It reviews National Transportation Communications for ITS Protocol (NTCIP) 1211 Signal Control and Prioritization (SCP) standards, defines five SCP scenarios, and describes how the SCP scenarios can be applied differently based on TSP priority and operating policies. The report provides an overview of a number of TSP systems, including centralized TSP, two discrete TSP systems based on loop detection and Global Positioning System (GPS) technologies, and an Adaptive Transit Signal Priority (ATSP) system. A comparison of...

Lateral Guidance System Requirements Definition

Parsons, Robert E.
Zhang, Wei-Bin
1988

The Institute of Transportation Studies (ITS) is assisting the California Department of Transportation (CALTRANS) to establish and conduct a program of advanced highway technology R&D to obtain better productivity from the States’ most used highway segments. The Program on Advanced Technology for the High-way, PATH, centers on advanced technology opportunities that may contribute to the relief of traffic congestion, with related problems of air pollution and parking; and on energy for transportation, in particular continued use of petroleum based fuels.

Robust Lateral Control of Heavy Duty Vehicles

Tai, Meihua
Wang, Jeng-Yu
White, Ryan
Tomizuka, Masayoshi
2001

In this report, achievements under MOU385, robust lateral control of heavy vehicles for automated highway systems are presented. The purpose of this project are: to design new controllers or redesign existing controllers for lateral control of heavy vehicles to improve performance; to evaluate designed controllers by experiments and to study autonomous vehicle following control. Toward this goal, we have obtained three main results during year 2000-2001, which are presented in this report.

ATIS -- Alternative Revenue Approaches

Yim, Y. B.
2001

As part of a continuing research on Advanced Traveler Information Systems (ATIS), this report presents an institutional analysis of alternative approaches to sustaining publicly supported ATIS. The fifteen largest metropolitan regions in the US and the private sector efforts were investigated through a literature review and in-person and telephone interviews. The study goals were to investigate alternative revenue approaches to achieve a self sustaining ATIS, identify institutional barriers to achieving self-sustainability, and develop a framework of assumptions. Two public sector...

New Hardware and Software Design of a Field-Deployable Real-Time Laser-Based Non-Intrusive Detection System for Measurement of True Travel Time on the Highway

Cheng, Harry H.
Shaw, Ben
Palen, Joe
Lin, Bin
Hu, Xudong
Chen, Bo
Parks, Jason
2001

A new version of a field-deployable real-time laser-based detection system has been developed using new techniques of electronics and optics. The laser-based non-intrusive detection system uses a laser line that is projected onto the ground as a probe. The reflected light is collected and focused into a photodiode array by an optical system. Vehicle presence is detected based on the absence of reflected laser light. By placing two identical laser/sensor pairs at a known distance apart, the speeds of both the front and rear of a vehicle are measured based on the times when each sensor is...

Bay Area Simulation and Ramp Metering Study

Gardes, Yonnel
May, Adolf D.
Dahlgren, Joy
Skarbardonis, Alex
2002

This research project focuses on the investigation of a portion of the southbound morning peak I-680 freeway facility, between I-580 in Pleasanton and SR 237 in San Jose. The project provided an opportunity for testing the Paramics model capabilities to replicate freeway traffic conditions, and assess to what extend the existing model can simulate various operational strategies such as HOV lanes and ramp metering.

Section Related Measures of Traffic System Performance: Final Report

Ritchie, Stephen
Sun, Carlos
1998

This project describes a new set of advanced traffic surveillance techniques that are based on inductive vehicle waveforms and pattern recognition technology. Focus is on demonstrating and evaluating a new method for obtaining true selection related performance measures, such as section travel time and section density, for freeways. The report also discusses methods for the measurement of lane-by-lane traffic movement and specific origin/destination demands.

Cal Poly Pomona EDAPTS Test Deployment Procurement Documentation Package Version 7.0

Jia, Xudong, PhD
Gerfen, Jeff, PhD
2009

This report documents the Bronco Express EDAPTS System procurement process that follows the V-Model. The V-model process led the research team to have a clear understanding of expectations of what the procured system needed to do. It demonstrated a practical procurement and bidding methodology for small/medium transit agencies to acquire their own unique EDAPTS solutions.The procurement was conducted in two phases: 1) the pre-procurement evaluation and definition processes and 2) the Request for Proposal (RFP) process. In the pre-procurement process, the EDAPTS Operations Guidelines that...

Assessing Opportunities for Intelligent Transportation Systems in California's Passenger Intermodal Operations and Services

Miller, Mark A.
Loukakos, Dimitri
2001

This report presents the findings of its investigation into intermodal passenger transfer facilities' operations and services in urban areas of California and the opportunities for how the application of intelligent transportation systems may enhance such operations and services. The project was based initially on a macroscopic assessment of intermodal passenger transfer facility operations and services primarily by means of a review of the literature followed by a three-tier analysis through site visits, institutional aspects, and user views and opinions. Institutional aspects were...