I use the first one, and yes I believe people are responsive. I used to get cut off a lot because drivers "didn't see me". I reply in the same dumbfounded way "you didn't exactly come to a complete stop" uh-duh. This thing is like: hey mfer pay attention to me! without actually having to shout that. Sometimes I just tap the putton twice and wave at the driver coming out of a driveway.