Japan's subways have a reputation for being energy-saving and eco-friendly, and companies have been successfully exporting their technology around the world. Discover why the permanent magnet motors in use on the Ginza Line's 1000 Series, as well as the latest linear motor and "Automated Train Operation" systems are all gaining keen interest. Then "See, Touch and Move" at Japan's only Metro Museum to explore the history of the subways, and some of the new technology applied in recent years.

• Rena Matsui
• Maiko Ishii
• Miki Murai