` Raising the speed to 350kmph ( 217 mph ) or 380 kmph ( 236 mph ) would lower built-in safety redundancies , and greatly increase wear-and-tear and operating costs , '' Zhao said . China 's high - speed rail network is now the world 's busiest with daily ridership exceeding 100 million . China inaugurated the country 's first high - speed service in 2010 . The rapid construction has raised doubts about the system 's reliability and commercial viability . The government plans to complete a 25,000-kilometer high - speed line by 2020 .
China 's high - speed rail network is now the world 's busiest with daily ridership exceeding 100 million . China inaugurated the country 's first high - speed service in 2010 . The rapid construction has raised doubts about the system 's reliability and commercial viability . The government plans to complete a 25,000-kilometer high - speed line by 2020 .