Sometimes I wonder??????????????

I recently returned home from Florida. On the drive back I took my wife and Brother and Sister in laws through New York city as they had never seen it before. It was my 4th time which is 3 times to many. LOL
Anyway, we ended up in a traffic jam on the G.W. bridge for 2 1/2 hours. We sat there not moving looking at the following sign for at least 1/2 hour. I thought it was rather funny but it got me wondering. Who is in control of these signs? Do they not look at the camera and see nothing is moving. How the hell was I supposed to go any slower?

Jack