It is the stop sign across from the 7-11 in front of the old Costa's drug store. Maybe it should be moved closer to where Hinckley comes out at Double Decker. I go through the CBD almost every day, or come up Hinckley from the train station and have to sit while several people either run the sign or roll through it.With my grandson in the car I really hesitate to pull out.

Well duntie there's a story to tell about the intersection at Sellers and Hinckley and if other Parkers know more, please pipe-in. Back in the day there were no stop signs at Hinckley and Sellers. Then came the new Swarthmore Avenue bridge project and a traffic light was temporarily put there to control the traffic. When the project was finished folks (and the Borough) felt the light was great and the Borough petitioned PennDot to leave it there. The reason for the petition to PennDot is that Sellers Avenue is a PA State Highway; just like Chester Pike and just like Ridley Avenue, and Penndot has 100% absolute say over their highways. So at the intersection of Sellers and Hinckley, Penndot's solution was not a traffic light, it was a 4 way stop sign. The trouble was and still is, at this particular 4-way intersection, Hinckley is divided by Sellers and offset by a few hundred feet. This didn't go unnoticed.
When the Central Business District was being redesigned a few years ago and the idea to put a stop sign on Sellers at Double Deckers was put forward to PennDot the stop sign application was refused. Now, if the Borough places a stop sign on Sellers and there's an accident, Ridley Park Borough would be 100% liable for installing a stop sign on a State highway without a permit.
The RP Police and Ridley Park Borough are 100% unable to make a changes to Sellers Avenue, despite the problems you've written about. Without PennDot's approval the intersection must remain as is.
I'd offer the new focus for your voice should be at a higher level in PA's government where the decisions are in the planning phase that will completely change the face of Sellers Avenue, downtown Ridley Park, and Hinckley Ave.
In two years the Sellers Avenue bridge replacement will begin and the intersection of Hinckley and Sellers will be unrecognizable when the bridge is raised two more feet - stay tuned in for the planning phase is just beginning... hope this helps

this is still going on but until the work is done on the bridge nothing will change