Digi Helps SEPTA Comply With Federal Mandate For "Positive Train Control" (PTC) Serving more than one million riders each day, the Southeastern Pennsylvania Transportation Authority (SEPTA) is the nation’s sixth-largest public transportation system, providing bus, subway, light rail, regional rail and paratransit services across five counties in and around Philadelphia. SEPTA provides over 300 million trips annually on a rail network comprising over 450 miles of track. Business Challenge Each day, when customers choose to use SEPTA ’s acclaimed – and growing – rail service, the goal is to ensure they enjoy the most pleasant travel experience possible. But first and foremost, SEPTA is committed to providing a safe riding experience and environment. In recent years, tragic accidents around o

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