The State Senate moves to keep motorists from using a device that only emergency responders should have and to keep police from abusing the use of it. Some fire trucks and ambulances carry traffic signal preemption systems – electronic devices that allow first responders to change traffic lights so they can get through intersections without problems. But some private motorists are trying to get the devices, and traffic safety people say that can make intersections extremely hazardous. Senator Patrick Dougherty has won senate approval of his plan to let communities pass ordinances limiting who can use those devices. The Senate accepts her provision that any tickets issued because of police abuse of the devices will be in-valid and accepts Dougherty’s plan to limit legal possession of traffic signal pre-emption systems. Their proposals are waiting for final approval by the Senate so they can be considered by the House.