Farmergeorge said "You honk your horns at maybe an elderly, novice or nervous driver surprising or scaring them . They may panic and makes a major error or move into the path of oncoming traffic. Good job YOU just caused an accident and possibly causing injuries or worse. It’s your conscience. Be more patient with other people. The roads are dangerous enough. "
are equipped with horns for a reason.
"The vehicle operator uses the horn to warn others of the vehicle's approach or presence, or to call attention to some hazard. Motor vehicles, ships and trains are required by law in some countries to have horns."
If you are worried about someone getting startled enough to cause an accident maybe they should still be either practicing their driving in a parking lot or have their licences re evaluated. What on earth are they going to do when a siren for an emergency vehicle comes up behind them? Panic and run into it?