Dueling Coasters, or Racing Coasters is the term used when two or more roller coasters are placed right beside each other and start at the same time, usually ending at the same time too. To build a dueling coasters, construct two or more roller coasters with stations next to each other, and enable the Synchronize Adjacent Stations button (found here). The key thing is to have the first piece of station platform on the first station right next to the first piece of station platform on the other station. So this means that the stop-and-go-lights on both station platforms are right next to each other. You can have two station platforms facing the same direction this way, even with different lenghts, or you can even have the two station platforms facing opposite directions, as long as the firs