Setting

Maximum Superelevation Rates (emax)*

Urban (Curb and Gutter) Roads (DS< 45mph)

4%

Suburban / Developing Areas

6%

Rural (Non Curb and Gutter)

     Paved Roads

6%

     Unpaved Roads

Reverse Crown

Interstates, Expressways, L/A Facilities

     Rural

8%

    Urban

6%

System-to-System Ramps

    Rural

8%

    Urban

6%

Exit-Entrance Ramps

8%

Free Flowing Loop Ramps

10%

Long Ramps with STOP

8%

*The maximum allowed values (emax) for usage on Georgia roadways, as designated by GDOT.

In general, GDOT does not require superelevation on low-speed urban roadways or roadways with a design speed of 25 mph or less