The term 'Rush Hour Sounds' refers to the noises that are commonly heard during rush hour traffic. The two crossword solutions for this term are 'TOOTS' and 'HONKS', both of which are five letters long. 'TOOTS' is a sound made by a car's horn, usually in short bursts, while 'HONKS' is a longer, louder sound made by a car's horn. Both of these sounds are common during rush hour traffic, as drivers use them to signal their presence or to express frustration.