Railways

Rolling stock is all the engines and carriages including the locomotives, passenger coaches, freight wagons, guard's vans, etc. that are used on a railway.

The Diamond Quadrilateral railway project has the mandate to develop high speed rail network across several metros of India. So far 6 corridors have been identified. 
These are:
1) Delhi-Mumbai. 
2) Mumbai-Chennai
3) Chennai-Kolkata
4) Kolkata-Delhi and both diagonals i.e. 
5) Delhi-Chennai.  
6) Mumbai-Kolkata routes.

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The following reforms have been announced for the railway sector in the Union Budget 2017-18:
1) The GoI will provide INR 55,000 crore ($ 8.25 bn) towards capital and development expenditure of Railways.
2) A fund named Rashtriya Rail Sanraksha Kosh worth Rs 100,000 crore ($ 15 bn) will be created, which will be directed towards passenger safety.
3) All the coaches of the Indian Railways will be fitted with bio toilets by the year 2019.
4) Railway lines of 3,500 kms will be commissioned in 2017-18.

The investment opportunities are available in the following areas:
1) Components manufacturing.
2) Infrastructure projects.
3) High speed train projects.
4) Railway lines to and from coal mines and ports.
5) Projects relating to electrification, high-speed tracks and suburban corridors.
6) Dedicated freight corridors.
7) The re-development of railway stations.
8) Power generation and energy-saving projects.
9) Freight terminals operations.
10) Setting up of wagon, coaches and locomotive units.
11) Gauge conversion.
12) Network expansion.