Light rail transit (LRT) is electric urban rail service that typically operates in exclusive rights of way. Most often, it uses one- to three-car trains and is designed to serve high-volume corridors at higher speeds than a local bus or streetcar service. Design and operational elements of LRT include level boarding, off-board fair payment and traffic signal priority. Stations are typically spaced farther apart than those of local transit services and are usually situated where there are higher population and employment densities. While longer stop spacing can increase walking distances for some riders, people are typically willing to walk farther to reach transit if service is fast and frequent.