Average Daily Traffic (ADT) counts are analogous to a census count of vehicles on city streets. These counts provide a close approximation to the actual number of vehicles passing through a given location on an average weekday. Since it is not possible to count every vehicle on every city street, sample counts are taken along larger streets to get an estimate of traffic on half-mile or one ... The most up-to-date breaking news for the Chicago Blackhawks including highlights, roster, schedule, scores and archives. Chicago traffic updates reporting highway and road conditions with live interactive map including flow, delays, accidents, construction, closures,traffic jams and congestion, driving conditions, text alerts, gridlock, and driving conditions for the Chicago area and Cook county.