Positive Train Control (PTC) introductory video from Amtrak
https://www.youtube.com/watch?time_continue=114&v=FCl7HgyXsTQ
A big thank-you to the companies that sponsor the Train Campaign
https://www.youtube.com/watch?time_continue=114&v=FCl7HgyXsTQ
A big thank-you to the companies that sponsor the Train Campaign