Quote Originally Posted by Buy American View Post
My uncle lived on East Grand Blvd within walking distance of the tunnel. You could see the entrance from his front porch. The explanation I always got from my parents and my uncle for the sign "Do Not Honk Horn" was that the tunnel would collapse if a horn sounded....therefore, I was always scared to death that we'd be in there and some person would honk. Does anyone really know the reason why they posted the sign?
My guess is that the west enterance to the under Jefferson tunnel was still in a residential neighborhood. There were many apartments on the east side of the Boulvedard and stately homes on the west side. The tunnel created quite a loud echo that most likely peeved the the nearby residents.