The system was praised by city leaders and emergency responders when the idea was presented at a Traveling City Hall in May.
A test signal would've first been installed at the intersection at Columbia and Fulton. The light flashes when an emergency vehicle travels through the intersection.
Evansville Fire Department spokesman Dan Grimm says they're going back to the drawing board.
"We do think the system is very important," said Grimm, "and that's why we're still pursuing possible options to it. But anytime you can enhance the safety of the public as well as the responder, police, fire, EMS; I mean that's a win-win for everyone."
Grimm says they will continue to research to find the right option for the city of Evansville.