The Northwest Corridor Express Lanes (formerly Northwest Corridor HOV/BRT) and locally known as the Tollercoaster,[2] is a completed Georgia Department of Transportation (GDOT) project which has put Peach Pass-only toll lanes along Interstate 75 (I-75) and I-575 in the northwestern suburbs of the Atlanta metropolitan area.

From the Perimeter (I-285 on the north side) to I-575, the road had already been built with 12 to 16 lanes, which required other plans, including via eminent domain.

However, it would also effectively end the subsidy the industry gets by using roads which are mainly paid for by the public (in contrast with railroads, which maintain their own tracks and pay per-mile taxes on them on top of that).

Citing the enormous cost of the plan (around four billion dollars), in summer 2009 it was scaled back to putting two barrier-separated reversible lanes on I-75 to I-575, and one in the median on each road north of there.

[4] The United States Department of Transportation awarded Cobb County a grant that will help pay for a project to install an exit ramp between the southern terminus of the express lanes and Akers Mill Road.