I could be wrong. I can't locate the source I found originally. Online chatter for a city planning forum said around 20k. This very old information says it's a

I could be wrong. I can't locate the source I found originally. Online chatter for a city planning forum said around 20k. This very old information says it's a lot less, but I don't think these numbers would be accurate for a small town with only enough money to fix their signals piecemeal by contractors, or for one that involves smarter programming that works around MUTCD. https://www.itskrs.its.dot.gov/its/benecost.nsf/ID/215f723db93d293c8525725f00786fd8 https://www.itskrs.its.dot.gov/its/benecost.nsf/ID/215f723db...