<P> Granville Tailer Woods ( April 23 , 1856 -- January 30 , 1910 ) was an American inventor who held more than 50 patents . He is also the first American of African ancestry to be a mechanical and electrical engineer after the Civil War . Self - taught , he concentrated most of his work on trains and streetcars . One of his notable inventions was the Multiplex Telegraph , a device that sent messages between train stations and moving trains . His work assured a safer and better public transportation system for the cities of the United States . </P>
<P> Granville Tailer Woods ( April 23 , 1856 -- January 30 , 1910 ) was an American inventor who held more than 50 patents . He is also the first American of African ancestry to be a mechanical and electrical engineer after the Civil War . Self - taught , he concentrated most of his work on trains and streetcars . One of his notable inventions was the Multiplex Telegraph , a device that sent messages between train stations and moving trains . His work assured a safer and better public transportation system for the cities of the United States . </P>
who invented the train to station communication system
who invented the train to station communication system
Granville Tailer Woods
Granville Tailer Woods