An interesting case in the state of Ohio occurred when a deputy sheriff, while responding to an activated burglar alarm (alarm drop) without lights or sirens so as to not alert any intruder in the home, collided with a stopped car.
The deputy testified he approached an intersection where cars were beginning to move after the traffic light turned green. After he passed through the intersection, he looked down at the radio in his cruiser to make sure that it was tuned to the proper channel for communicating about the alarm. When he looked up, he saw that the car in front of him had stopped. He did not have time to stop the cruiser before it collided with the stopped car.