Houston Chronicle - September 29, 2007
RED-LIGHT CAMERAS ALSO SNARING POLICE
Houston police commanders say the city's red-light camera enforcement program should increase safety at intersections by prompting "behavior modifications" in motorists. Not all of their own employees are getting the message, however. More than 100 Houston police vehicles moving through intersections without emergency lights were cited in the first year of the cameras' operation, according to ticket data.

Apparently law enforcement personnel didn't get the memo.