PNR South Main Line
The PNR South Main Line (, also known as Southrail and formerly the Main Line South) is one of the two trunk lines that form the Philippine National Railways' network in the island of Luzon, Philippines. It was opened in stages between 1916 and 1938 by the Manila Railroad. Services peaked in the 1940s until the late 1960s, when the system started to decline. Since 1988, it was the only functioning inter-city rail after its counterpart to the north, the North Main Line, was closed. The intercity section of the line in Laguna, Quezon and the Bicol Region was then closed and reopened repeatedly between 2004 and 2014 due to a combination of declining ridership and was closed since then. Currently, only two short sections of the line survive; the PNR Metro Commuter Line between Tutuban station and Laguna, and the "Bicol Commuter" regional rail service between Sipocot and Naga, Camarines Sur.

Since its closure, there has been a planned overhaul of the line. The railway will consist of two standard-gauge lines which will overlap in southern Metro Manila and Laguna. One is the North–South Commuter Railway's South section between Tutuban and Solis stations in north-central Metro Manila to Calamba station in Calamba, Laguna. This route will be electrified with direct current power through overhead lines. The other is the PNR South Long Haul from Sucat station in Muntinlupa to Matnog station in Matnog, Sorsogon. This route will continue to be operated by diesel stock but will run at a maximum speed of , over twice higher than the existing narrow-gauge line.
Q3238851
trunk lines
Concept
Q1637464
Philippine National Railways
MEDIA
Q125384
Luzon
LOC
Q928
Philippines
LOC
Q1022147
inter-city rail
Concept
Q61098548
North Main Line
Concept
Q13840
Laguna
LOC
Q13872
Quezon
LOC
Q13662
Bicol Region
LOC
Q18388218
PNR Metro Commuter Line
LOC
Q7857053
Tutuban station
LOC
Q14626453
regional rail
Concept
Q13767
Camarines Sur
LOC
Q1999572
standard-gauge lines
Concept
Q13580
Metro Manila
LOC
Q65074061
North–South Commuter Railway
LOC
Q7558171
Solis station
LOC
Q5018402
Calamba station
LOC
Q75978
Calamba, Laguna
LOC
Q159241
direct current
Concept
Q110701
overhead line
Concept
Q7632521
Sucat station
LOC
Q17176
Muntinlupa
LOC
Q174246
Matnog
LOC
Q13881
Sorsogon
LOC
Q106946849
PNR South Main Line
UNK
1916-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
1916
DATE
1938-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
1938
DATE
1940-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
1940
DATE
1960-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
1960
DATE
1988-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
1988
DATE
2004-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
2004
DATE
2014-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
2014
DATE
country
country
located in the administrative territorial entity