Train trade magazine reports on Wi-Fi and Internet on the rails: The article has a remarkably optimistic tone about the future of train access stating that most rail riders will have Internet access in five to 10 years. The piece walks through developments of the last year, including PointShot's significant partnership with Parsons Transportation Group, a major rail builder.
But beyond the passenger side, rail operators will see important telemetry and operations advantages, such as precisely tracking train location and on-board seat sales.
Two rail systems that I haven't seen previously discussing adding Internet access are listed in this article: Trinity Railway Express, which runs light rail in Dallas and Ft. Worth; and Caltrain, the San Francisco to San Jose rail line.