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
Pennsylvania Railroad the Philadelphia, Wilmington and Baltimore Railroad (PW&B) for access to this line. The PRR's New York–Washington trains began using the route the next day, ending Pennsylvania Air Line service. In the early 1880s, the PRR acquired a majority of PW&B Railroad's stock. This action forced the Baltimore and Ohio Railroad (B&O) to build the Baltimore and Philadelphia Railroad to keep its Philadelphia access, where it connected with the Reading Railroad for its competing Royal Blue Line passenger trains to reach New York. In 1885, the PRR began passenger train service from New York City via Philadelphia to Washington with limited