A wireless infrastructure for delivering contextual services and studying transport behavior

We present an intelligent transport infrastructure for passenger sensing and data dissemination. The infrastructure consists of multiple distributed components and uses Bluetooth to sense mobile devices and by implication the passengers who carry these devices. By analyzing real-time sensed data the infrastructure provides a set of contextual services to passengers. The novelty of this work is the associated distributed architecture, and a specification language for defining contextual services. This paper presents tests of the performance of the infrastructure for both content dissemination and environment characterization, and the results highlight the usefulness of Bluetooth monitoring for studying and enabling inference of population behavior.