In general I am not for lights/sirens on every call. As evedince is showing, running 3 is rarely beneficial to pt outcome. With that being said, I think a lot of it depends on your service and coverage area. I work full time in the city and we only run 3 if its true emergency or unknown medical. Otherwise its 2. But, a very rural volunteer service that I also run for typically responds from home during the night hours. So we have to get to the bay, then go enroute. In some situations, i.e. road construction, etc; lights/sirens on the responding crews POV can be benificial. I do believe that crews should use common sense, but unfortunately that is not always the case. We recently had a volly responding in pov for a minor structure fire that was practically running people off of the road. Thanksfully he was reported and caught by state police.
Please people, use some common sense.
(While writing this, we got toned for mother in active labor with twins who were only at 28 weeks. We were responding mutual aid to a neighboring city that did not have a crew. Yes, lights/sirens were used. And yes, I earned 2 pink stark pins)