I didn't have the time go wipe the snow off each of these cars' windshields to photo the placard numbers, but based on the consistent illegal parking and double parking I see here (http://nyc.uncivilservants.org/post/index/493), I suspect these are all NYPD Transit Bureau restricted placard holders. The black Mercedes without snow on it or a front plate was not moving--it was triple parked. There was another, identical black mercedes right behind it (roof barely visible)--also triple parked. This portion of Columbus Circle, built to accomodate 5 lanes of traffic, was reduced to 2, and both lanes feeding from the Circle into Central Park West were blocked.