They’re also making our railway safer, cheaper, more efficient, and generally bigger and better. They’re also making our railway safer, cheaper, more efficient, and generally bigger and better. It relies on digital wireless communications between trains and rail infrastructure to let drivers know of blockages ahead. The complex trade-offs of electrifying the rail network illustrates longer-term uses of AI. If you need more capacity on the rail network, you can do a lot worse than simply run longer trains.