Red-light camera companies can hire public officials as sales agents without disclosing it. That’s under federal scrutiny, and critics say the loophole should be closed.

SafeSpeed came to dominate the suburban red-light camera market during the last decade by developing deep relationships with public officials.

Consider the company’s dealings in southwest suburban Justice, where court records show the firm not only was getting a new contract but was enlisting the police chief to act as a consultant to get other towns to do the same for a cut of the proceeds.