Westwood One (who is at least 50% owned by CBS) owns Shadow, Metro and Smartroutes. In Boston Shadow was disassembled long ago and Metro and Smart Routes were combined into one place. When Mass Highway pulled their funds SmartRoutes pretty much closed up and let a bunch of people go. I don't think Ch5 had any option but to go in house at that point. Metro Traffic & News still does traffic for a bunch of folks. Clear Channel also has their own outfit called Total Traffic which was where Aron Sawyer last worked.