Study on International Road Roughness index (IRI) using Smart phone application from REVA University to Kodigehalli gate, Bangalore, India

Abstract

International Roughness Index (IRI) is one of the most widely used indices to determine the roughness of different road surface. Roughness index helps in identifying the quality of the road surface and suggest improvement measures. In this paper Roughness index values are measured from REVA University to Kodigehalli Gate. International Roughness Index are measured using mobile application. IRI value depends on vehicle speed and road. Roughness indicates the present road condition and helps in making decision related to management and maintenance of different types of roads. Based on Carbin app [1] results road user can identify 1) Safety, 2) Traffic, 3) Comfort of driving, 4) Fuel Consumption, 5) Quality of Air and 6) Road condition. Carbin application is used to collect Road quality, Speed, CO2 savings. In the study stretch Maximum value of IRI = 5.6m/km obtained from Bagalur cross to on BSF Cross and this stretch road user face all the above 6 problems. Minimum value of IRI= 2.44m/km obtained from Kodigehalli Cross to Bagalur cross (Airport Road-NH), the road is recently maintained by overlaying, in this stretch, road users comfortably use this stretch of road with respect above 6 aspects. As per the IRI value, new roads to be constructed to get IRI<1.2 m/km, once it reaches IRI=4 m/km road need to be maintained to get IRI < 2.2 m/km.