Tseung Kwan O line the morning peak period, the Tseung Kwan O line uses 15 trains to maintain a frequency of 2.5 minutes betweem Tsemg Kwan O and North Point. The Tseung Kwan O line is the first MTR line with no tracks on viaducts. It was the only line with tracks completely in tunnels until the completion of LOHAS Park station, near which there are two short sections that are not in tunnels. The stations of Yau Tong, Po Lam and LOHAS Park are at ground level, but are completely shielded to minimise noise to the surrounding development. The rest of the line
Lehigh Line (Norfolk Southern) River Railroad in 1886 which had been held by the Reading Railroad since 1860 when it had blocked construction in order to maintain its monopoly in the Southern Coal Field which held the largest reserves of anthracite in Pennsylvania. Through neglect, the Reading allowed the charter to lapse and it was acquired by the LV which immediately constructed the Schuylkill and Lehigh Valley Railroad and connected it with the mainline. The line gave the LV a route into Pottsville, Pennsylvania and the Schuylkill Valley coal fields. The Vosburg Tunnel was completed and opened for service on July 25, 1886. The