Government data shows that the system has carried about 1.8 billion passengers since the start of 2009. Rail experts inside and outside China say they are not aware of any fatal crashes other than the one near Wenzhou. They also note that obsessive attention to the rail system by social media users means that it would be nearly impossible to cover up another fatal high-speed train crash — although there have been unconfirmed reports of pedestrians killed after sneaking past fences and on to the tracks.
Comparing the 40 deaths in the crash two years ago to the number of Chinese high-speed train trips completed without loss of life over the last several years suggests that the trains have been exceptionally safe overall, said Arnold I. Barnett, a mathematician at the Massachusetts Institute of Technology who is one of the world’s best-known experts on aviation safety statistics.
“Chinese high-speed rail has so far established a mortality-risk level that equals or exceeds that of the world’s safest airlines,” Mr. Barnett wrote in an e-mail.