 Also beginning in 1966, chiefly in the Delaware River basin urban regions of southeastern Pennsylvania, New Jersey, and Delaware, ARCO sponsored a traffic-reporting service called "The ARCO Go Patrol," originally it was the "Atlantic Go Patrol".While the merger with Richfield and eventual rebranding of the stations to ARCO was successful, it did essentially make the company a bi-coastal chain, having no presence from east of the Rocky Mountains to west of the Appalachian Mountains (save for Western Pennsylvania, since Atlantic was prominent in that state).This was remedied with the purchase of Sinclair Oil in 1969.