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Safe Transit in Shared Use

During the last 30 years, due to the flexibility of light rail transit (LRT), new systems have been implemented, some of which include line segments that share tracks with freight operations regulated by the Federal Railroad Administration (FRA). To operate on the general railroad system, these LRT systems have obtained waivers from FRA safety regulations by operating with temporal separation. The aim of this research study was to further develop concepts for temporal separation to enable shared use operations in additional locations with more frequent and more flexible operations of FRA-compliant and non-compliant services. Based on the operating concepts and technology that facilitate temporal separation on the NJ TRANSIT River LINE, this project prepared a design for expanding freight and passenger operations while maintaining separation of modes in a configuration that is very similar to designs that have already been accepted by FRA.