Well, it just seems that way. The former Channel 11 traffic man is doing afternoon drive on a lot of Houston stations and in San Antonio, too:
http://mikemcguff.blogspot.com/2011/04/former-khou-11-traffic-guy-darby.html
http://mikemcguff.blogspot.com/2011/04/former-khou-11-traffic-guy-darby.html