NextBus/How NextBus Works:

NextBus information is not a static schedule listing — it is actual arrival information, updated at regular intervals. Because traffic variations, breakdowns, and day-to-day problems faced by any transit provider can interrupt service, NextBus was designed to keep you on schedule even if your bus or train isn’t.

From the comfort and security of a protected place, you can learn when the next bus will arrive at your stop.

NextBus uses satellite technology and advanced computer modeling to track vehicles on their routes. Each vehicle is fitted with a satellite tracking system.

This is really awesome. Up-to-the-minute updates of where your bus is located–if it is running on time, or late, etc. including Web alerts. Spend less time waiting at the bus stop, and make your commute smarter. Next time I am in San Francisco . . . .