The top speed of the Fuxing bullet trains was capped at 300km/h (186mph) in 2011 following two crashes that killed 40 people.
After cutting back the speed of the Beijing to Shanghai bullet trains some of the trains will once again be allowed to run at a higher speed of about 350 km/h.By September 21st , 7 of China’s bullet trains will be permitted to travel at the increased maximum speed.
All the trains have been fitted with an improved monitoring system that will slow and stop the trains automatically in the event of an emergency.