Module 5 : Uninterrupted Flow
Lecture 25 : Ramp Metering
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Introduction

Ramp metering can be defined as a method by which traffic seeking to gain access to a busy highway is controlled at the access point via traffic signals. This control aims at maximize the capacity of the highway and prevent traffic flow breakdown and the onset of congestion. Ramp metering is the use of traffic signals to control the flow of traffic entering a freeway facility. Ramp metering, when properly applied, is a valuable tool for efficient traffic management on freeways and freeway networks.