Colm O'Regan: Here's my guide to the real rules of the road

At no point was I schooled on the correct pressure to apply when beeping the horn for several different messages and also to interpret the different beeps.
Sometimes it feels like the rules of the road and the driving test don’t match the real world. I learned to reverse around the corner. I have used it once a year. But at no point was I schooled on the correct pressure to apply when beeping the horn for several different messages and also to interpret the different beeps.
Officially you are only allowed to beep the horn “warn other road users of oncoming danger or to make drivers aware of your presence for safety reasons when reasonably necessary.” This is of course completely ignored. There are many unofficial uses for the horn and we need a sort of morse code.