Critics of photo enforcement often paint a picture of government overreach. Though drivers can appeal their tickets, some claim the cameras violate the constitutional right to face their accuser. Others say they are an invasion of privacy. http://www.nytimes.com/2013/04/02/us/traffic-cameras-draw-more-scrutiny-by-states.html?ref=us Many contend that local governments — as well as the companies that manufacture and maintain the equipment, some in exchange for a percentage of the revenue rather than a flat fee — are more interested in money than in safety, pointing to studies indicating that the cameras may actually cause accidents.  Resentment has been building in Washington since 2010, when the mayor at the time, Adrian M. Fenty, raised traffic fines as part of his efforts to balance the budget. The fine for driving 11 to 15 miles per hour over the speed limit went up to $125 from $50  “He was very clever and assiduous about squeezing out items that weren’t technically taxes that he could use for revenue,”  Proposals in Arizona, Florida, Iowa and several other states would ban the cameras, joining the 12 states that prohibit speed cameras and the 9 that block red light cameras.