We use motorbike (or) bicycle daily to travel within the city. Let it be going to office, or to buy things from shop, etc., and wherever we go we also carry our smartphone with us. Today all the smartphones comes with GPS (Global Positioning System) as well as Accelerometer sensor with it.
Utilizing both GPS and Accelerometer data from smartphone recorded during a trip, a research paper suggests that we can calculate the roughness of the road using a parameter called as International Roughness Index (IRI).