Get a peek at how Union Pacific plans to avoid train crashes

A simulator in Union Pacific's Roseville yard demonstrates how a new GPS system called Positive Train Control will help engineers avoid crashes.
Up Next
A simulator in Union Pacific's Roseville yard demonstrates how a new GPS system called Positive Train Control will help engineers avoid crashes.

New GPS technology will help keep trains from crashing. Why is it taking so long to arrive?

March 06, 2017 04:00 AM