Beijing underground cross-city railway

The Beijing underground cross-city railway is a short railway connection in Beijing. The speed limit is 120 km/h. It connects the important transportation hubs Beijing railway station and Beijing West railway station via a tunnel. It also connects lines from southern and western areas with lines from northeast China. The railway has a length span of 9.156 km (5.689 mi), and has been officially operational since March 20, 2015.

Beijing underground cross-city railway
The entrance at Beijing railway station
Overview
StatusOperational
LocaleBeijing
Termini
Stations2
Service
TypeHeavy rail
Operator(s)China Railway Beijing Group
Rolling stockHXD3D, SS9, CRH6
History
OpenedMarch 20, 2015
Technical
Line length9.156 km (6 mi)
Track gauge1,435 mm (4 ft 8+1⁄2 in) standard gauge
Minimum radius4500m
Electrification50 Hz 25,000 V
Operating speed120 km/h (maximum speed)
Maximum incline16%
Route map
Beijing–Harbin railway to Harbin
Beijing–Baotou railway to Baotou
Beijing–Chengde railway to Chengde
 
Beijing–Shanghai railway to Shanghai
 Beijing
Line 5
Line 8
Line 4
Line 19
Beijing Moat
Line 16
Beijing–Kowloon railway to Kowloon
 Beijing West
Beijing–Guangzhou railway to Guangzhou

It is used by conventional railway lines such as K7752 from Shijiazhuang to Chengde via Beijing West railway station and Beijing railway station. It is also used by the commuter rail service in Beijing, the Sub-Central line of the Beijing Suburban Railway, which started in December 2017.

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