You let a friend borrow your car. A few weeks later you get a ticket in the mail with a picture of the car running a red light. You know you were not driving the car, but now you're stuck with a ticket and have to prove your innocence.
Lawyers say such a hypothetical situation is not only unfair, but illegal.
But now ticket recipients and their lawyers are pushing back.
Dennis Salvagio, a criminal defense attorney from Orlando, Fla., said the traffic cameras and the way cities use them to issue tickets are illegal because they force citizens to prove their innocence, rather than forcing cities to prove drivers' guilt.
"It was unconstitutional from the get-go," Salvagio told ABCNews.com. "I think everybody should fight it."
The West Palm Beach, Fla. law firm of Schuler, Halvorson & Weisser has filed 27 class action lawsuits against Florida municipalities, charging that they have operated the cameras without legal authority. The first ruling came in Orlando, where the city may be forced to refund over $4 million collected from over 50,000 tickets issued since the city started the program in September 2008.
In Houston, another attorney, Paul Kubosh, organized a group called Citizens Against Red Light Cameras, which has gathered over 30,000 signatures on a petition that would put the cameras up for a vote before the community.
"All I want is a vote. Just a vote!" Kubosh told ABCNews.com.
Though citizens are upset about the cameras and the fines that come with them, Vicki King, assistant chief of information systems command for the Houston Police Department, cannot understand why people don't want cameras that may reduce the "horrific" car crashes that result from drivers running red lights.
"I scratch my head when I hear opponents of red light cameras," King told ABCNews.com. "I've had more nightmares from motor vehicle crashes than I ever did from homicide.
"I don't know why people aren't screaming at us to do more," she said.
Lawyers like Salvagio and David Kramer, one of the lawyers working on behalf of plaintiffs in the Florida class action suits, say they only want to make sure the government is following the law. Although Kramer and his firm are fighting the cameras in court, he said they are neither for nor against the cameras on safety grounds.
"Our goal is to make sure that the government operates within their authority," Kramer told ABCNews.com.
Orange County Circuit Court Judge Frederick Lauten ruled against the city of Orlando before the case went to trial, instead issuing a summary judgment. In his decision, Lauten wrote that the city did not have the right to operate the cameras because by law, only the state has the power to allow the cameras. Prior to July 1, state law did not allow the cameras.
He added that the city did not establish who had the burden of proof when it came to the red light violations, which is the problem that leads Salvagio to call the cameras unconstitutional.
"You should never have to come forward and say, 'I didn't do it,'" Salvagio said. "Under the rules, you have to come forward and say what defense you have."