Mayor Rahm Emanuel's administration banned the company from competing for the upcoming speed camera contract and went further last month by announcing that Redflex would lose its red light contract when it expires in June. The Chicago program, with more than 380 cameras, has been the company's largest in North America and is worth about 13 percent of worldwide revenue for Redflex Holdings. Since 2003 it has generated about $100 million for Redflex and more than $300 million in ticket revenue for the city.