Overtaking Zone || Highway Engineering - Civil Engineering

Tuesday, 20 November 2018

Overtaking Zone || Highway Engineering

Overtaking Zone

There may be stretches of road where the safe overtaking distance can not be provided.In such case,overtaking opportunity for vehicles moving at a design speed should be given at frequent interval.These zones which are meant for overtaking,are called overtaking zones.
Overtaking Zone highway engineering
Overtaking Zone
Minimum length of overtaking zone should be three times the safe overtaking distance i.e, 3(d1+d2) for one way traffic & 3(d1+d2+d3)for two way traffic.

O.S.D = Overtaking Sight Distance
O.S.D =(d1+d2) for one way traffic=(d1+d2+d3) for two way traffic.P
SP1 = Sign Post " Over taking zone ahead"
SP2 = Sign Post "End of Over taking zone"

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