was paid to Xerox. County officials say that after paying employees and funding the program, they collected about $15,000 in revenue from the tickets, adding that the point of the effort is traffic safety.

Howard officials note that in 2013, only 47 people contested their tickets in court, with just two winning.

In a statement, Xerox acknowledged that its reports to the county had "missing data," but said its employees were in the process of correcting the reports. "There are no issues with the cameras and ... no erroneous violations were forwarded to the county for review," the statement said.

Even so, some said they believe that the flawed data raises questions about the integrity of the county's speed camera program.

"If the data smells funny, there probably is a problem," saidstate Del. Warren Miller, a Howard County Republican. "We really should take a more comprehensive look at the accuracy of these systems. And we shouldn't have vendors like Xerox getting rich off this system if it's not working."

Miller said he plans to reintroduce a bill in the next General Assembly session that would require quarterly audits of all speed camera programs in Maryland.

Xerox operated Baltimore's speed camera program from the fall of 2009 through 2012, drawing criticism after an investigation in 2012 by The Sun documented erroneous speed readings at seven cameras. The investigation found that tickets were issued to motorists who were not speeding, including one stopped at a red light.

The city replaced Xerox with Brekford Corp. of Anne Arundel County, but its brief tenure in 2013