external image Railroad-Depot-001.jpg

1887
This is the year when Granville Woods painted a telegraph system for communicating with moving trains. This reduced the risk of collision. This was very important.

Information Provided by :
Prentice Hall: America Pathways to the present

Picture Provided by:
http://images.google.com/imgres?imgurl=http://www.old-picture.com/civil-war/pictures/Railroad-Depot-001.jpg&imgrefurl=http://old-photos.blogspot.com/2007_11_01_archive.html&h=540&w=650&sz=75&hl=en&start=6&um=1&usg=__iQlJ5z7oHSAHcNP1gKhlldSC4J8=&tbnid=dMM3-AgwmKzSpM:&tbnh=114&tbnw=137&prev=/images%3Fq%3Dphonograph%2Bfor%2Bthe%2Brailroad%26um%3D1%26hl%3Den%26client%3Dsafari%26rls%3Den%26sa%3DN