Frequently, high-speed rail is thought of as a completely separate, stand-alone system. This is only true in Japan.
Other countries have used the blended approach. High-performance trains use both high-speed and conventional tracks to reach their destinations, just as cars and buses use both Interstate Highways and local roads in a single trip.
With the blended approach, individual projects become a series of building blocks towards a long-term vision.
Here are a few examples: