Werribee railway line

Werribee
Overview
Type	Melbourne suburban service
System	Metro Trains Melbourne, freight
Connecting lines	Sunbury, Williamstown, Geelong lines
Services	Stopping all stations, some peak expresses
Operation
Commenced	1857
Completed	1859
Rolling stock	Comeng, Siemens, X'Trapolis 100
Number of tracks	Double track throughout, except for Altona loop (single track)

The Werribee railway line is a suburban electric railway in Melbourne, Australia. It has 15 stations, in Public Transport Victoria ticketing Zones 1 and 2. The Werribee line is the suburban portion of the Port Fairy railway line, previously used by regional services to Geelong and Warrnambool prior to the completion of Regional Rail Link in 2015, apart from a deviation from the main line through Altona. It will, in the future, be extended to Wyndham Vale railway station, meeting with the Grovedale-South Yarra Line, as part of the PTV Network Development Plan.

The line traverses the flat plains of Melbourne's western suburbs, and after leaving Footscray, has no significant earthworks. The area around the outer end of the line has seen significant residential growth in recent years.

The Werribee line is made of multiple tracks (shared with other lines) from the City Loop until South Kensington, where it reverts to double track. From shortly after Newport, the two tracks are signalled for bidirectional operation, although it is rare for trains to not use left-hand running. At Altona Junction, just after the start of bidirectional operation, the Altona line diverges. This is a single-track branch, which rejoins the main line at Laverton. A Passing loop is provided at Westona.

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