The Delhi–Panipat–Ambala–Kalka line was opened in 1891.[1]
The 2 ft (610 mm)-wide narrow-gaugeKalka–Shimla Railway was constructed by Delhi–Panipat–Ambala–Kalka Railway Company and opened for traffic in 1903.[2] In 1905 the line was regauged to 2 ft 6 in (762 mm)-wide narrow gauge.
Electrification
Sabjimandi (Delhi)–Panipat–Karnal sector was electrified in 1992–1995, Karnal–Kurukshetra sector in 1995–96, Kurukshetra–Ambala in 1996–98, Ambala–Chandigarh in 1998–99 and Chandigarh–Kalka in 1999–2000.[3]
Loco sheds
Ambala has a diesel loco shed for minor maintenance of WDS-4 shunters. The locos are sent to Shakurbasti for major maintenance or repairs. Kalka has a narrow-gauge diesel shed for the maintenance of ZDM-3 and ZDM-5 narrow-gauge diesel locos.[4]
Speed limits
The Delhi–Panipat–Ambala–Kalka line is classified as a ‘Group B’ line which can take speeds up to 130 km/h.[5]