Bullet trains are high-speed rail systems that operate at faster speeds than traditional trains. The first bullet train was the Shinkansen in Japan, which ran between Tokyo and Osaka in 1964. Bullet trains require specialized tracks and use technologies like magnetic levitation to guide the trains and reduce friction. Examples of bullet trains include Japan's extensive Shinkansen network, China's plans for a 372 mph maglev train, and India's upcoming Mumbai-Ahmedabad high speed rail corridor built with Japanese assistance that is expected to begin operations by the end of 2022.