This is an acceleration on March, when revenue passengerkilometers increased 2.9%.
这是3月份的一个加速，付费旅客周转量增加了2.9%。
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Around 300 trains should be able to speed through the Gotthard's twin tubes every day, at up to 250 kilometers per hour (155 mph) for passenger trains, according to planners.
With the new round of speed hikes, passenger trains traveling between Beijing and Guangzhou, and on other key rail routes, will upgrade their speed to a record high of 200 kilometers per hour.