Gov. Martin O'Malley has signed a bill Tuesday  that will permit local jurisdictions to install cameras on school buses to enforce the law against passing those vehicles when they stop to pick up or drop off children.

 The bill, proposed by Frederick County Republican Sen. David Brinkley, would allow a fine of up to $250 for violations detected by the cameras. Because the cameras identify the car, and not the driver, the law does not impose points for such violations.

Thw General Assembly passed the law after local and state school officials conducted a study showing thousands of violations each day of the law requiring drivers to stop for school buses with their flashing red lights on and stop sign extended.

School bus passing will be the third category of traffic law for which enforcement by cameras is permitted, State law currently allows their use to enforce laws to enforce law against red light running and speeding in school zones and work zones.