Porirua Railway Station is an important intermediate station in New Zealand on the Kapiti Line from Wellington and is part of Wellington's Metlink suburban rail network operated by Transdev.The island platform urban railway station is on a double track section of the North Island Main Trunk which was opened in 1885, on the alignment of today's Down (southbound) line. There is subway access to Porirua city centre and bus stops serving the Porirua area.ServicesPorirua is served by electric multiple units owned by Greater Wellington Regional Council and operated on its behalf by Tranz Metro, part of KiwiRail. Trains run every 30 minutes outside peak times, and more frequently during peak periods.The station is the hub for bus services west to Titahi Bay and east to Porirua East and Ascot Park. Hoy wrote in 1968 that the importance of Porirua is shown by the activity of arriving and departing trains and the fact that nearly half the weekday services terminate there. A goods shed and lengthy yard is available for local industries. A casual observer will perhaps wonder where the City obtains its importance until he looks at the line of buses both private and N.Z.R. waiting to take passengers on to Porirua East and Titahi Bay. Well over 1,000,000 passengers are brought to the station annually on the Government buses alone. Porirua station is of modern design with a glassed in ticket office and waiting room at the northern end, while subways link the two bus stands on each side of the track. In 2014 it was described as, "the region's second busiest station".