Which invention in 1887 allowed trains to communicate with each other, enabling safer, more frequent scheduling?

Answer

Induction Telegraph System

Granville T. Woods's Induction Telegraph System, patented in 1887, allowed trains to communicate, which helped prevent catastrophic collisions and allowed for safer, more frequent scheduling.

Which invention in 1887 allowed trains to communicate with each other, enabling safer, more frequent scheduling?
inventionTransportationimprovement