mass transit.

SDI has a long history of implementing and supporting technologies for some of the nation's largest mass transit systems. From back-office systems to security and ticketing, SDI knows mass transit technologies. And, as mass transit begins to implement advanced technologies like biometrics, dynamic digital signage, and self-ticketing, SDI has the skills to implement these systems. When the country's largest and most complex mass transit clients need technologies to enhance operations and reduce risk, they turn to SDI. Some of our recent notable clients include:

2nd largest PUBLIC TRANSIT in the US: SDI provides critical systems support for all IT systems, including servers, networks, and desktop computers. We also implemented the asset management system that maintains over 2,000 buses and over 1,000 rail cars.

2nd ranked COMMUTER RAIL SYSTEM in the US: This commuter rail system, which provides over 82 million commuter rides per year, needed to eliminate conductors carrying cash deposits. SDI implemented an advanced cash-handling system that reduced risk and enhanced accountability.