· Chris Thompson · Hamilton Turner · Brian Dougherty · Douglas C. Schmidt



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3 Solution approach
This section describes a prototype smartphone- based client/server application we developed—called
“WreckWatch”—to address the challenges presenting in Section. WreckWatch provides functionality similar to an accident/event data recorder by recording the path, speed, and forces of acceleration on a vehicle leading up to and during an accident [
3
]. It can also notify emergency responders of accidents, aggregate images and video uploaded by bystanders at the scene of an accident, and send prerecorded text and/or audio messages to emergency contacts The WreckWatch client/server architecture
WreckWatch is separated into two main components—
the WreckWatch server and the WreckWatch client—
shown in Fig. The WreckWatch client was developed using Google Android. It acts as a mobile sensor, relays accident information to the server via standard HTTP
post operations, and provides an interface that allows third-party observers to contribute accident report data.
The WreckWatch Android client is written in Java based on Android 1.5 with Google APIs. It consists

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