In this paper, we present the design and implementation of a sensor network system for monitoring the flow of traffic through temporary construction work zones. As opposed to long-term work zones which are common on highways, short-term or temporary work zones remain active for a few hours or a few days at most. As such, instrumenting temporary work zones with monitoring equipment similar to those used in long-term work zones is not practical. Yet, these temporary work zones present an important problem in terms of crashes occurring in and around them. Our design for a sensornet-based system for monitoring traffic is (
) inexpensive, (
) rapidly deployable, and (
) requires minimal maintenance. We report on our experiences in building this system, and with testing our system in live work zones in the Cleveland area.
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