But at the same time, there were (and still are) many new third rail systems built elsewhere, including technologically advanced countries (e.g. Copenhagen Metro, Taipei Metro, Wuhan Metro).
Tetapi pada saat yang sama, ada (dan masih) banyak sistem rel ketiga baru yang dibangun di tempat lain, termasuk negara-negara berteknologi maju (misalnya Copenhagen Metro, Taipei Metro, dan Wuhan Metro).