GDOT DPM: Design Manual: Table06.7

Table 6.7. Curb Types Allowed for Various Types Of Roads
Curb Type(1)	Road Type
Curb Type(1)	Interstate	Urban Type A	Urban Type B	State Route Design Speed < 45 mph	State Route Design Speed > 45 mph	Other Off Roadway Classification
Concrete Curb and Gutter
Type 1						x
Type 2		x	x	x		x
Type 3						x
Type 4						x
Type 7		x	x	x	x	x
Concrete Header Curb
Type 1						x
Type 2		x	x	x		x
Type 3						x
Type 4						x
Type 7		x	x	x	x	x
Type 8		x	x	x	x
Raised Median
Type 1
Type 2				x
Type 7	x	x	x	x	x
Raised Island
Type 1
Type 2				x
Type 7		x	x	x	x
V Gutter	x	x	x
(1) Typical shapes and dimensions for various types of curbs, including curb and gutter, are shown in Ga. Std. 9032B. Four-inch sloped Type I curbs placed at the back of the usable shoulder may be used on high speed facilities.