Re:chusssh-chusssh-chusssh, huh? (Score 2)

Coming from a country where headlights are compulsory at all times, I have noticed that cars without headlights (I'd say less than 1% of the cars during daytime) are a lot easier to miss; possibly because the brain subconsciously writes them off as being parked. It's really kind of spooky the way you just don't notice them until they are really close.

So, I'd say the risk with this kind of sound might well be that people will disregard the old kind of alarms even more when we've all gotten used to this new sound.