In (Yi Chou February fifth day), March 25, 1985, the United States help train running from space. 25,

1985 Burlington Northern Railway Company Every day, around 900 trains in 25 states in the United States and two Canadian provinces over 25,000 miles of railway on the run. This company is the first to test the space satellite system to track all vehicles railway company. Burlington Northern Railway
installed on two locomotives computer and electronic equipment to transmit signals to satellite receiver altitude of 12,500 miles. The railway companies use the the advanced railway electronic system developed by Rockwell International, to determine the location of the two columns test train, the error does not exceed 150 feet, which is more advanced signal system used by more than one hundred years, the signal system to determine a The train position error of 7-10 miles.