Startup Idea : Real Time Bus Information

There are a lot of apps out there that give the time tables based on the timings provided by the company. But in places like Canada, America and other European countries where temperatures drop to ridiculous lows with tons of snow, its hard for the buses to follow the schedule. For this reason, I believe, there should be some sort of a real time bus tracking application, that would be universal in its content. Any bus service, looking to provide real time information to their consumers, can use it. The data would come from the GPS systems that are installed in almost all buses that are part of a major city or corporation. And this data could then be used to put out on a map or any other visual presentation. Once the app is developed and running, itll make everyone's life a lot easier.