This app was mentioned in
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Washington State Department of Transportation has a really nice app that shows all the highway cameras. For android, here is the link [link]
They also have an iPhone app too.
Personally I think this app has everything that I need. [link]
I didn't get to take the survey, what kind of features are you looking for?
Google Play (Android) [link]
iTunes (Apple) [link]
Here ya go