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The integration of advanced CMOS image sensors with high-performance processors into an embedded system facilitates new application classes such as smart cameras. A smart camera combines video sensing, video processing and communication within a single device. This paper reports on the prototype implementation of a smart camera for traffic surveillance. It captures a video stream, computes traffic information and transfers the compressed video stream and the traffic information to a network node. The achieved experimental results of the implemented stationary vehicle detection demonstrate the feasibility of our approach.