In Elk Grove, thousands of drivers are chipping in to help balance a city budget that's in the red. They're doing it by going into the red themselves – running lights at two intersections overseen by new high-tech video enforcement cameras. In the year since Elk Grove put cameras at two spots on Laguna Boulevard, the city has banked $600,000 in revenue from citations. Long promoted as safety devices, red-light cameras quietly are becoming modest money-makers in Elk Grove and other California cities, including Marysville and soon possibly Sacramento County. Elk Grove's cash infusion hasn't come, however, from ticketing traditional...