Light-Rail Transit (LRT)

18 Feb.,2024

 

Introduction

Light-rail transit (LRT) is rapid transit that operates electric-powered single cars or short trains on fixed rails. Light refers to lighter passenger capacity, not the physical weight of the vehicles. Today’s LRT originates from traditional streetcar systems but is redesigned to run faster and carry more passengers over greater distances in a metropolitan area.

LRT vehicles can run in highway medians or on streets with at-grade intersections like streetcars. Generally, LRT runs along fully dedicated rights-of-way to reduce the impact from and to adjacent traffic. Sometimes, LRT systems use abandoned railroad rights-of-way, underground tunnels, or even drainage canals to avoid roadway traffic and adjust to the physical environment. If separated crossings are not provided, transit signal priority is given to LRT to minimize delay and waiting times at intersections.

Like heavy rail, LRT serves widely spaced stops to cover long distances and ensure higher speeds. However, LRT may make more frequent stops similar to streetcars in downtown areas to provide more access to passengers.

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