Page 119 - Lecture Notes DCC3113

 Small roundabout, 25 > Dc > 4m , 50m > Di > 20m

Figure 8-15: Small roundabout

 Mini roundabout, 4 > Dc, 20 > Di

Figure 8-16: Mini roundabout
 Twin roundabout

Figure 8-17: Twin roundabout

 Grade separation roundabout

Figure 8-18: Grade separation roundabout

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