According to the Indian Roads Congress (IRC) Standards, the length of the horizontal transition curve for a plain and rolling terrain is given by the expression:
1
\(L_s = 2.7 \frac{V^2}{R}\)
2
\(L_s = 3.7 \frac{V^4}{R}\)
3
\(L_s = 5.7 \frac{V^2}{R}\)
4
\(L_s = 7.7 \frac{V^3}{R}\)
5
\(L_s = 8.2 \frac{V^4}{R}\)