Field Test of Combined Coordinated Ramp Metering and Variable Speed Advisory for Freeway Traffic Control

– Xiao-Yun Lu, Principal Investigator

About this Project

The objective of this project is to field implement, test, and evaluate the performance of Combined CRM and VSA on SR 99 NB corridor in caltrans District 3 in Sacramento. The project will use a series of roadside VSA signs along the corridor and one or two changeable message signs (CMS) in the upstream section to acknowledge the public driver in advance about the VSA and CRM downstream to gain better driver compliance rate. The project will also develop a website displaying various collected data that can be accessed by the public.