I had the air horns primed and ready just in case one got too near.

Then there was a fearful blast of an air horn.

Two stayed on long enough to hear the air horn at eight seconds, indicating a legal ride.

This is to prevent the use of the powerful air horn in populated areas.

Smith kept his foot on the throttle and made good use of the air horn.

All we have to do -' The air horn stopped.

After a few years in service, they were also fitted with air horns.

Then he held up an air horn and gave a starting blast.

In 1947 the fog signal changed to an air horn.

On the show Jim read questions and honked a loud air horn.