Police Harleys. Like most of you, I've seen Police on Harley-Davidson motorcycles since I was a kid. Not for all of the one hundred years that Harley-Davidson has been supplying motorcycles to police. Although some days it feels like it.Harley started producing motorcycles for police departments in 1908 and has been doing so ever since. Today there are police on Harleys in 45 countries. Harleys