Safety-Based Optimization Model for Highway Horizontal Alignment Design

Table 7

Optimization results of the designed horizontal alignment of the selected highway segment.

Tangent intersection points	Coordinates of tangent intersection points		Tangent deflection angle		Radius of circular curve (m)	Transition length (m)		Superelevation
	X(N)	Y(E)	Turn left	Turn right		Ahead	Back
Start	4077410.485	567745.344
PI1	4077173.065	567642.142		89°54′41″	224	65	65	0.06
PI2	4077420.012	567071.624	18°23′09″		243	52	52	0.03
PI3	4077454.655	566677.167		12°00′40″	460	52	52	0.03
PI4	4077828.540	565456.558	10°28′30″		502	56	56	0.04
End	4077826.745	565076.690