[cva66snipe]

It's not so much the DB level causing the reaction but rather the frequencies used. How distracting for example would a sound the frequency of a typical household smoke alarm be especially out of the element of where you would expect to hear it?

I remember when I drove an 18 wheeler. First thing we were taught was pull the horn only as a last resort because it would likely create panic in the diver in front of you. I only used my air horn as a make shift burglar alarm for when I was in the sleeper. Second thing we were told to be careful when and where we engaged it was the Jake Brake for the same reasons. When a truck behind or beside you suddenly sounds like someone cranked up the engine volume that is the Jake Brake. It's supposed to only be used going down steep grades as a means to slow the truck.

[ProtectOurFreedom]

In the old days, there was nothing more fearful than going down a long country grade in Washington or Oregon with a fully loaded log truck behind riding his Jake Brake. Still sends shivers down my spine. Yikes!

[Salamander]

As a biker, I can personally vouch for what you’ve said.