Description: This WMATA bus route data is imported from GTFS data offered at https://developer.wmata.comWhen publishing maps displaying this data, you must comply with the WMATA's terms at https:// www.wmata.com/about/developers/Use-of-Metro-Intellectual-Property-Developers.cfmSpecifically, you must use the registration mark ® and give credit to MetroWMATA bus service changes happen every year in March, June, September, and December.