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Federal Highway Administration Research and Technology
Coordinating, Developing, and Delivering Highway Transportation Innovations

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Publication Number:  FHWA-HRT-21-039    Date:  March 2021
Publication Number: FHWA-HRT-21-039
Date: March 2021


Developing Analysis, Modeling, and Simulation Tools for Connected Automated Vehicle Applications: A Case Study on SR 99 in California

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Connected automated vehicle (CAV) technology is expected to produce significant mobility, safety, and environmental benefits for the traveling public. However, real-world case studies are needed to articulate reasonable benefits attributable to the technology. This report details a case study on the impact of vehicle connectivity and automated longitudinal control (i.e., SAE J3016 driving automation Level 1) on SR 99 in California to explore the benefits of cooperative adaptive cruise control on mobility and environmental performance measures.(1) This report may be of interest to State and local departments of transportation looking to better understanding possible real-world impacts of CAV technology.

Brian P. Cronin, P.E.
Director of Safety and Operations
Research and Development


This document is disseminated under the sponsorship of the U.S. Department of Transportation (USDOT) in the interest of information exchange. The U.S. Government assumes no liability for the use of the information contained in this document.

The U.S. Government does not endorse products or manufacturers. Trademarks or manufacturers' names appear in this report only because they are considered essential to the objective of the document.

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