Walking Traffic Cones appear at the Firehouse Expo. The popular Traffic Cone costumes appeared on the show floor of Firehouse Expo in Nashville. Past CVVFA President Jim Watson of Delaware City induced Trish Cross of Spanaway, WA who was working a nearby booth for IMSalliance.com to join the fun. The cone costumes are a popular “hook” to start conversations with show attendees about the serious topic of roadway incident scene safety. Since the roll out at the FDIC last spring scores of people have gotten selfies as a traffic cone.