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, and has been officially operational since March 20, 2015.
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.

History

In the early 1980s a plan was proposed to connect Beijing railway station to Beijing West railway station via a conventional railway. This was an important part of the overall planning of Beijing West railway station's renovation, originally announced as part of the "Eighth Five-Year Plan". However, due to technical difficulties and other factors, this project did not initiate.