Transportation Highways Horizontal Curve Calculator
Calculate the geometric properties of the horizontal curve with the given values of intersection angle, degree of curve and point of intersection.
NoteHorizontal curve on the road provides a transition between two tangent strips, allowing a vehicle to take a turn at a gradual rate.
Highways Horizontal Curve - Transportation Calculation
Code to add this calci to your website
R = 5729.58 / D
T = R * tan ( A/2 )
L = 100 * ( A/D )
LC = 2 * R *sin (A/2)
E = R ( (1/(cos (A/2) ) ) - 1 ) )
M = R ( 1 - cos (A/2) )
PC = PI - T
PT = PC + L
D = Degree of Curve, Arc Definition
1Â° = 1 Degree of Curve
2Â° = 2 Degrees of Curve
P.C. = Point of Curve
P.T. = Point of Tangent
P.I. = Point of Intersection
A = Intersection Angle, Angle between two tangents
L = Length of Curve, from P.C. to P.T.
T = Tangent Distance
E = External Distance
R = Radius
L.C. = Length of Long Chord
M = Length of Middle Ordinate
c = Length of Sub-Chord
k = Length of Arc for Sub-Chord
d = Angle of Sub-Chord
By determining the above elements such as radius, length etc using this highways horizontal curve transportation calculator, the geometric highways design can be made easier.