For the first time, players will take charge of vehicles in their cities. Is the fire department stuck in traffic on its way to a four-alarm fire? Players will take direct control of the "hook and ladder" and pursue the quickest route to the blazing inferno. Players will also solve missions such as catching car-jackers and thwarting bank robbers to earn reward buildings and other vehicles. As players gain traction by fixing transportation problems and solving missions, they will watch their mayor approval rating soar and their Sim population grow! They will also be able to put their Sims on the move in new cars, ferries, helicopters, and zeppelins.

New to SimCity 4 Rush Hour are a variety of new bridge options and the ability to create a city based on a modern European building set. Players will also be able to add popular structures to their cities such as historic train stations, classic Americana road marks, or European tourist attractions. They can make their final mark as mayor and personalize their city by labelling street names, mountains, neighbourhoods, and points of interest.

True to the SimCity series, the expansion pack will also feature new disasters. Car accidents and train derailments can wreak havoc throughout the city and snarl traffic. Players may test their nerve and stop a car at the intersection of a railroad and watch what happens next. Players also will be able to start a UFO alien invasion and watch the abduction of Sims, the destruction of buildings, and the creation of crop circles. Others may want to take control of their own flying saucer and create mayhem. Players can now put their foot on the gas and get their Sims on the go in SimCity 4 with SimCity 4 Rush Hour.