If R is the radius of the main curve, θ the angle of deflection, S the shift and L the length of the transition curve, then, total tangent length of the curve, is

1.

If R is the radius of the main curve, θ the angle of deflection, S the shift and L the length of the transition curve, then, total tangent length of the curve, is

[A].	(R - S) tan θ/2 - L/2
[B].	(R + S) tan θ/2 - L/2
[C].	(R + S) tan θ/2 + L/2
[D].	(R - S) tan θ/2 + L/2
[E].	(R - S) cos θ/2 + L/2

Answer: Option C

Explanation:

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