Traffic jams are a common occurrence in many cities, and the sound of beeping horns and other vehicles is a familiar one. The term 'traffic jam sound' can be summarized by two four-letter words: 'BEEP' and 'HORN'. Beeping is often used to indicate a warning or alert, while honking a HORN is usually done to signal impatience or frustration. Both of these sounds are commonly heard in traffic jams, and together they create a cacophony of noise that can be quite overwhelming.