On Monday, Mayor Daley unveiled his plan for Chicago traffic control, which contains such items as self-adjusting traffic lights, carpool lanes for streets leading to and from expressways, and tow trucks dispatched within minutes to remove disabled vehicles and delivery trucks that are blocking lanes. Before you get your hopes up, though, the article says that this plan hinges on installing cameras and sensors at 2,800 intersections in the city, a plan which could cost $200-700 million and could take anywhere from 15 to 50 years for complete installation. Some of the less costly changes, such as the fast-tow program and ticketing of vehicles using bus lanes, will be implemented later this year.