News Emergency Service Plan Now in Effect for all PRTC Buses By Potomac Local News Published January 21, 2014 at 11:20AM | Updated January 22, 2014 at 8:46AM New OmniLink buses that serve Prince William County, Manassas, and Manassas Park. The buses have a new look more aligned with the overall color scheme for the Potomac and Rappahannock Transportation Commission. [Submitted photo] This article is FREE to read. Please Sign In or Create a FREE Account. Thank you. Author Potomac Local News View all posts #News