Work zone speed cameras got a workout in Maryland in 2011.
The cameras caught almost a half millions violations that brought in about $19 million in fines.
As usual with traffic cameras, the work zone speed cameras cause controversy. The American Automobile Association says drivers question whether tickets should be issued during times when construction workers are not on site. More than half of the citations came during non-working hours.
Follow NBC Washington to get the latest news, events and entertainment anytime, anywhere: on air, online, and on Facebook // Twitter.
