1. A method for detecting electronic device use by a driver of a vehicle, the method comprising: acquiring an image including a vehicle from an associated image capture device positioned to view oncoming traffic; locating a region of the vehicle in the captured image; processing pixels of the located region of the image for computing a feature vector describing a windshield region of the vehicle; applying the feature vector to a classifier for classifying the image into respective classes including at least classes for candidate electronic device use and candidate electronic device non-use; and, outputting the classification.