WTMC is a non-commercial radio station. It also broadcasts on FM translator station W253CQ at 98.5 MHz. WTMC serves as a traffic advisory station, a service of the Delaware Department of Transportation (DelDOT) broadcasting in Wilmington, Delaware. There are signs posted around the Wilmington area advising motorists to tune to this station for traffic advisories. One such sign exists on U.S. Route 202 upon entry into Delaware from Pennsylvania. The service was started in 2000, when DelDOT purchased the license.