well loud is what people want. so train/semi horns are what people are gonna get. yeah it does get annoying. but sometimes they are a good thing. as for in the case of an alarm. but then there are alarms that you can have them say something. have one with a 100 watt pa and then people all around the car could hear it. i recently gave my friend a 100 watt pa speaker for his cb and its soooo much louder compared ti the 10 watt one someone let him borrow. you actualy couldnt hear the 10 watt one at all imo.