Indeed, but you are already one step ahead with real-time updates. This is an entirely different beast than static schedule data. In my experience (I occasional

Indeed, but you are already one step ahead with real-time updates. This is an entirely different beast than static schedule data. In my experience (I occasionally talk to people in the industry), even providers of public transportation in cities with over 500,000 inhabitants have trouble providing reliable and machine-readable real-time information (like: this trip is cancelled today, this trip is 5 minutes delayed at station X, there is an additional trip Y today, expect delays this afternoon because of Z, ...). At least where I come from, the solution was that the state government decided to build a centralized infrastructure for all providers to use. Real-time information is displayed there on a website which also provides a real-time route planning. The real-time data is also available in machine-readable form. It is a lot easier to convince a small bus operator in a rural area to just enter cancellations / delays into a website than it is to convince him to buy and administer servers and software to built its own real-time service.