No, I don't think it is common knowledge among non-radio types. I assumed Traffax was owned by Metro Networks (part of Westwood One), and their cut-back on WITF traffic was just a cut-back. I know how dismal the ad market is, especially in 2nd tier markets like Harrisburg-York-Lancaster. Traffax had become somewhat of a 2nd tier traffic network (except for News8), as CC and Cumulus do their own traffic checks.
Remember "Brian Freeman in the Traffax Command Center"? Before his drug problems became public and before his brief gig on WXBB-97.3, the brief predecessor to the return of WHP-FM (before CC and "The River" debuted), he was the voice of traffic in an area that wondered why we needed a traffic service. Talk about built from scratch! Obviously he made it work here, Allentown, and Delmarva. Too bad his legacy left the way it did.
R.I.P. Traffax.