I don't believe there is any particular standard for this at the moment, and it likely on a list of special cases where the human "observer" takes over.
In general though, I don't think this is something that automated vehicles will have trouble with. Picking out strobing lights is pretty trivial for computer vision, and a couple of external microphones located on opposite sides of the vehicle would have an easy time localizing the direction of sirens even before the EV is in line-of-sight. I suspect eventually there will be some sort of preemption signal that EVs will be able to transmit that communicates their intended route to vehicles in their path.
I look forward to the day that I have a big ol' "get out of my way" button on the dashboard of my ambulance...
In general though, I don't think this is something that automated vehicles will have trouble with. Picking out strobing lights is pretty trivial for computer vision, and a couple of external microphones located on opposite sides of the vehicle would have an easy time localizing the direction of sirens even before the EV is in line-of-sight. I suspect eventually there will be some sort of preemption signal that EVs will be able to transmit that communicates their intended route to vehicles in their path.
I look forward to the day that I have a big ol' "get out of my way" button on the dashboard of my ambulance...