I have a Stebel air horn on my 2009
Kawasaki Versys. It generates a two
tone output at 139 dB. It has kept some
big F250 trucks from making a lane
change right next to me at 65 MPH. The
truck cab sits very high and the driver
does look down to look for other
vehicles. Female muslims with a hijab
often have their peripheral vision blocked
by the awful rag on their head. Be extra
careful when traveling near them.
Yes, the head garb makes tunnel vision look spacious.