Train text
I know mass transit companies have alert systems when trains are running late, but I wonder why they don't offer alert systems for specific trains and not just the rail line you are on.
For example, if you take the 8:10am train every morning, it would be nice to subscribe to that specific train and receive a text in the morning notifying you that your specific train is late, and maybe even letting you know of other options you can take such as another train or bus.
It sounds like a lot of work on their part, but I would assume it would all be computer automated...