Recommended Value of Stopping Sight Distance For Different Speeds As Per I.R.C

Following are the recommended value of safe stopping sight distance for different speeds of the vehicle as per I.R.C.  

Design Speed (Km/h)Safe Stopping Sight Distance (m)
20 20 m
25 25 m
30  30 m
40  45 m
50  60 m
6080 m
6590 m
80120 m
100180 m

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Stopping Sight Distance Formula

How to Calculate Stopping Sight Distance – Mathematical Example