folks should slow down for road works, and that is of course an absolute (not that that will be of much comfort to your roadworkers, regrettably), but with sirens it is difficult to know from which direction they are coming. It was easy when we were listening for bells, but they have given us a combination of "Wah Wahs" now and they are impossible to detect until the vehicle or its flashing lights is visible.
I think it must be something to do with the vibration pitch causing an echo/ricochet effect in a suburban environment (e.g. car and shop windows?), but this leads to "dithering" by motorists in all directions who don't know what to do until the last minute.
Not so good, IMO. Do you have this problem, or perhaps you have different "wah wahs", though I wonder, cos we seem to have copied the US for the sound?
Getting back to the point of your original post though, high profile is not exactly low profile for a discreet operation. But thanks to that article, it certainly ain't low profile now...