Commuter bikes are designed to get you to where you're going reliably, comfortably and stylishly. Generally, commuter bikes have thicker tires than a standard road bike, which makes the ride a bit smoother, however beyond that, commuter bikes vary according to your style. They can have dropped or flat handlebars, smooth or knobby bike tires or other variations, but with commuter bikes, the primary feature is reliability and comfort.