The horn honking is cultural in New York. If you visit the area, and cross from New Jersey into Manhattan, you'll notice that as soon as you cross the Hudson r

The horn honking is cultural in New York. If you visit the area, and cross from New Jersey into Manhattan, you'll notice that as soon as you cross the Hudson river, drivers are suddenly honking their horns for any reason at all, whereas they weren't in NJ. It's not about city size; I live in Tokyo now, which is much larger than NYC, it's extremely rare to hear a horn honk here, even in the areas with heavier car and truck traffic. Horn honking is a cultural thing.