For decades, rail was the dominant form of transport for both people and freight in Japan. But while trains and subways still enjoy healthy ridership in Japan's urban centers, regional rail is another story. Competing forms of transportation like cars, buses, and airplanes, plus Japan's shrinking population—and concentration of the population in major cities—means regional rail lines are facing a crisis. We dive into the details of that crisis, and what rail companies are doing to combat it, on this edition of Japanology Plus.