Atlanta is taking a lead in the fight against sprawl as the new Georgia Regional Transit Authority, which will have unprecedented power over transportation in the region, takes shape. The new body, created by the state legislature in March, will have control over the building and widening of roads, a carpooling system, and construction of a new regional transit system. Its actions will affect zoning decisions and even new business sites. Perhaps GRTA’s most daunting challenge will be getting people out of their cars in what has become one of the most gridlocked metropolitan areas in the nation.