Definitions by Cheat
rush hour
Occurs between 5:00pm to 9:00pm (it's alway the worst at 5), rush hour happens in pretty much any urbanized area, especially in and around major cities. The excess of cars on the road causes gridlock and traffic jams. However, once traffic actually starts moving, you figure out why it's called "rush hour", because everyone is in a rush and would rather risk you slamming into the side of their car as they cut a quick left, then wait 3 seconds for you to pass.
Caravan
A massive minivan vehicle which will block the road infront of you. Driven by soccer moms with an obesity problem, they'll always obey the speed limit to be 'safe for the community', but would gladly blow a stop sign if it meant being infront of all the oncoming traffic.