Westwood One supplies radio and television stations with information services and programming. Westwood One is the largest domestic outsource provider of traffic reporting services and the nation's largest radio network, producing and distributing national news, sports, talk, music and special event programs, in addition to local news, sports, weather, video news and other information programming. Westwood One provides a broad range of programming and information services, which deliver audience to advertisers and also deliver traffic, news, talk, sports and entertainment programs to its affiliate stations. In 1996, Westwood One acquired Shadow Traffic and in 1999, Westwood One significantly expanded its local and regional reach through its merger with the country's largest traffic service provider, Metro Networks, which broadcasts information reports in 67 of the 75 largest markets in the United States. The company is headquartered in New York.