1 Road accidents cause an estimated 1.3 million fatali- ties each year worldwide. We believe that mobile devices can play a positive role by detecting various driving related events like red light cutting, rash driving and many more. We focus on a specific problem that is responsible for many accidents in India: the stopping behaviour of buses espe- cially in the vicinity of bus stops. We propose a smartphone- based system that specifically seeks to detect and report the following scenarios. 1. Has the bus come to a complete stop(instead of a rolling stop)? 2. Has the bus stopped in the left lane? 3. Has the bus stopped exactly at the bus stop? © 2016 Copyright held by the owner/author(s).