Today's read: Prince George's approves cameras

Program to start in January: The county will begin placing cameras in 50 school zones over the following 18 months, and after a 30-day grace period, drivers will be mailed a $40 fine if caught by the devices, officials said. The county is taking advantage of the new Maryland law that allows local jurisdictions to install enforcement cameras in school zones. (Jonathan Mummolo)

Meanwhile, the state has extended the grace period for the other part of the new enforcement program, the speed cameras in highway work zones.