Ekasit Vorakitolan

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Typical intelligent transportation systems (ITS) are comprised of geographically distributed ITS devices including sensors, cameras and dynamic message signs (DMS). There are several options for providing data communication between these field devices and traffic management centers (TMC). Wireless networks are attractive due to their relatively lower cost(More)
Practically all major metropolitan and large scale modern intelligent transportation systems have a centralized traffic management center (TMC) at their logical and functional core. The TMC provides control, coordinates system wide communications, and typically serves as a common hub from which multiple agencies plan and execute coordinated incident(More)
ITS telecommunication infrastructure and information gathering/distribution equipment such as fiber-optic routing devices, communication huts, uninterrupted power supplies (UPSs), cameras and dynamic message signs (DMSs) are critical to the effective management of resources in emergency situations. Frequently encountered scenarios include evaluating the(More)
We introduce a simple video rate control strategy for reducing or eliminating decoder errors due to network errors and dropped packets on low bandwidth links in heterogeneous intelligent transportation system video networks. The proposed method is based on adaptively dropping frames prior to H.264 encoding. Performance of this strategy is assessed by(More)
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