But no one else should start. This is ridiculous.
Want details? Too lazy to google it yourself? Fine:
Dallas Area Rapid Transit
Dial a Ride Transit (in King County, Washington State) (but other places use the term, too, like Wilmington, Cape Cod, Midland Michigan, ... )
Des Moines Area Regional Transit
The Dart Transit Company (which appears to involve trucks)
DART First State -- Delaware Transit Corporation
Delano Area Rapid Transit (in California)
Dublin Area Rapid Transit (in Ireland)
Demand Response Transportation (in many places -- like Dial-a-Ride Transit, this is a term of art, as near as I can tell)
Dodger Area Rapid Transit (somewhere in Iowa)
Douglas Area Rapid Transit
Specifically, the people imagining a transit system for Augusta? Knock it off.