PATH

Caltrans Tour RFS

May 28, 2025

As the RFS Mobility Hub gains momentum and plans are taking shape, representatives from Caltrans and Partners for Advanced Transportation Technology (PATH) participated in a tour of activities at the Richmond Field Station on Wednesday, May 28, 2025.

Located just seven miles north of the UC Berkeley campus, the 170-acre Richmond Field Station serves as a vital hub for research, experimentation, and collaboration. It hosts multiple UC Berkeley research centers...

ITS Staff Spotlight: Hao Liu

June 2, 2025

PATH

Name: Hao Liu

What's your hometown?

My hometown is Shimen, a small town in Hunan Province, China. We are renowned for our spectacular canyons and ancient trade routes that traverse the waves of mountains.

What is your role at ITS? Describe your job in four words, and how long have you been here?...

How Safe Are Driverless Cars?: Steven Shladover / Research Engineer, UC-Berkeley Institute of Transportation Studies

May 26, 2025

NHK World Japan Steven Shladover

Dr Steven Shladover, Institute of Transportation Studies and Partners for Advanced Transportation Technology (PATH) researcher, discussed How Safe Are Driverless Cars?: Steven Shladover / Research Engineer, UC-Berkeley Institute of Transportation Studies...

A Zoox and an e-bike collided in S.F. Here’s what it says about robotaxi safety

May 13, 2025

San Francisco Chronicle Scott Moura, Faculty Director of Partners for Advanced Transportation Technology (PATH) and Professor of Civil and Environmental Engineering, alongside Matt Raifman SafeTREC researcher, and Steven Shadover PATH researcher discuss A Zoox and an e-...

Haas and ITS Fireside Chat - Powering the Future: Public-Private Partnerships at the Intersection of Mobility, Autonomy, and AI

May 9, 2025
Powering the Future: Public-Private Partnerships at the Intersection of Mobility, Autonomy, and AI

Middleware for Cooperative Vehicle-Infrastructure Systems

Manasseh, Christian
Sengupta, Raja
2008

Middleware has emerged as an important architectural component in supporting distributed applications. The role of middleware is to present a unified programming model to application writers and to mask out problems of heterogeneity and distribution. Mobile sensors fall into the space of distributed systems that suffer from isolated data sources, heterogeneous communication infrastructure and varying application requirements. In this report, we provide a middleware architecture that addresses the needs of a distributed system made of mobile sensors in general and discuss the implementation...

Identification and Integration of Commercial Heavy Vehicle Retarders

Druzhinina, Maria
Moklegaard, Lasse
Stefanopoulou, Anna G.
2002

This report describes the development and experimental validation of a coordination scheme between friction and discretely variable compression brakes for a Class 8 Freightliner truck used as a development platform in the California PATH program. The coordination scheme that we developed maintains the speed tracking performance of the nominal PID controller which was originally designed by the UCLA team for the case of friction brakes only.....

Documentation of the Irvine Integrated Corridor Freeway Ramp Metering and Arterial Adaptive Control Field Operational Test

McNally, M. G.
Moore, II, James E.
MacCarley, C. Arthur
2001

A systematic evaluation of the performance and effectiveness of a Field Operational Test (FOT) of an integrated corridor-level adaptive control system was attempted from fall 1994 through spring 1999 in the City of Irvine, California. The FOT was conducted by a consortium consisting of the California Department of Transportation (Caltrans), the City of Irvine, and two private sector consultants, National Engineering Technologies, Inc. (NET) and Farradyne Systems, Inc. (FSI, now PB/FSI), with the City of Irvine as the lead agency. The FOT was cost-share funded by the Federal Highway...

Cal Poly Pomona EDAPTS Test Deployment Operations Description Version 6.0

Jia, Xudong, PhD
Gerfen, Jeff
2007

This report documents the outcomes of the February 6, 2007 workshop. It presents the most valued system characteristics of the Bronco Express EDAPTS system through the use of scored operational scenarios. The operational scenarios included in this report are down selected from those described in the initial release (V3.0) of the Operations Description report. The Advisory Panel members considered only scenarios with medium or high priority to be worthy of final consideration as deployable elements. These selected scenarios will allow the researchers to have an overall understanding of how...

Modeling The Santa Monica Freeway Corridor: A Feasibility Study

Skabardonis, Alexander
Dahlgren, Joy
May, Adolf D.
1998

This report presents the findings of a feasibility study which developed a simulation testbed for the Santa Monica freeway corridor. The study involved performing an evaluation of the state-of-the-art models for Advanced Traffic Management and Traffic Information Systems (ATMIS) on freeway corridors. The evaluation was based on the model capabilities, input data requirements and output options, with focus on the record of real-life calibration, validation and practical application of the models. The findings show that the CORSIM and INTEGRATION models have the higher probability of...