STUDY ON THE EFFECT OF ROAD ROUGHNESS ON CAPACITY OF INTERMEDIATE LANE ROAD
Keywords:
Unevenness index, Roughness, Capacity, Passenger Car Unit (PCU)Abstract
The IRC 106-1990 states that the capacity of a sub arterial road under ideal condition is around 1900
PCU/hour, but the riding quality of the roads are not mentioned in the manual. This study or observation has revealed
that the capacity of an intermediate lane is also impacted by the roughness of the road .Data’s collected regarding the
roughness of the road and the free flow speed of the vehicles which includes only heavy vehicles and cars at fourteen
different stretches of two state highway’s in Karnataka were used to develop the relationships between two of these
variables. Additionally the speed and volume data’s collected at five different sections of intermediate lane roads were
studied and analyzed, the effect of roughness of road on capacity was found out.