[beatgammit]

Light rail has a lot more destinations, and most rail systems are designed to complement bus systems.

I live in Utah, and our "urban" area (SLC) is similar to many "suburban" areas in terms of population density. We have a commuter line that intersects with light rail, which intersects with the bus system. Rail hits most of the important business areas, and buses hit most of the residential areas, and each runs every 15-20 minutes. If you know the system, you can get around fairly well without a car. It was expensive to build, but it is used quite a bit so it is absolutely worth it.