WiBus: A Wi-Fi based Monitoring System for Public Transportation with Dynamic Route Tracking

A great challenge of today's metropolises is the constant traffic jams, which are a consequence of excessive use of private vehicles. More people would adopt public transportation, e.g. buses, if the time of arrival (ToA) for the next vehicle to each bus stop could be predicted. In this direction, we propose WiBus, which is a system to estimate the buses ToA, based on information from opportunistic IEEE 802.11 contacts. Unlike previous systems, WiBus explicitly takes into account bus route changes, adjusting the routes with an algorithm for dynamic route creation and maintenance. The system is implemented and analyzed via emulation of a real scenario. Experimental results show that WiBus has accumulated error of at most a few minutes.