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Abstract-A framework is presented to deploy a smartphonebased measurement system for road vehicle traffic monitoring and usage based insurance. Through the aid of a hierarchical model to modularize the description, the functionality is described as spanning from sensor-level functionality and technical specification, up to the top-most business model. The designer of a complex measurement system has to consider the full picture from low-level sensing, actuating, and wireless data transfer to the top-most level including enticements for the individual smartphone owners; the end-users who are the actual measurement probes. The measurement system provides two data streams -a primary stream to support road vehicle traffic monitoring, and a secondary stream to support the usage based insurance program. The former activity has a clear value for a society and its inhabitants, as it may reduce congestion and environmental impacts. The latter data stream drives the business model and parts of the revenue streams which ensure the funding of the total measurement system, and create value for the end-users, service provider and the insurance company. Besides the presented framework, outcome from a measurement campaign is presented, including road vehicle traffic monitoring (primary data stream) and a commercial pilot of usage based insurance based on the driver profiles (secondary data stream). The measurement system is believed to be sustainable, thanks to the incitements offered to the individual end-users, in terms of a favorable pricing for the insurance premium. The measurement campaign itself is believed to have an interest in its own right, as it includes smartphone probing of road traffic with a number of probes in the vicinity of the current state-of-the art, given by the Berkeley Mobile Millennium Project. During the 10 month run of the project, some 4,500 driving hours / 250,000 km of road vehicle traffic data was collected. Index Terms-Complex

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