I only rarely use my horn, and it tends to be to let other road users know of my presence *because they just did something totally stupid* and obviously must have been unaware of me. The only alternative is that they deliberately forced me to brake or otherwise take evasive action, and nobody would do that, would they...
Anyway, having had to toot somebody yesterday for doing a U turn on a 4 lane SC road and then sweeping back out into L2 on my side (at 20mph and not apparently accelerating)... my horn is crap.
It really is just a 'toot'. I want a RAAAAAARP!!!
What are the rules for car horns? Any of the MOT testers want to comment?
I was thinking of a twin trumpet air horn - not musical, just LOUD. Are these legal? I've seen reference to single tone, multi tone, single note etc. and I'm not sure what these count as - I guess they play a chord as a single continuous sound. The MOT testers manual seems to say 'harsh or grating' is also a reason for failure - shouldn't a horn be a bit of both to be effective?
What's the score?