Burglar Alarm Monitoring Systems for Traffic Safety

On the way in to work this morning I noticed a bus in the middle of an intersection that had one of those traffic cameras set up. It was in the intersection before the light turned red, but then a pick-up truck pulled in behind it after the light changed, causing the camera to go off. I wondered whether the bus would get a ticket because of that. I realized that a still photo is not enough in those situations, but a motion video camera like they use in burglar alarm monitoring systems is needed. Then it would be evident that the bus driver was not the one jeopardizing personal safety in this instance. Perhaps the traffic police can learn something from looking into home burglar alarms.