India has a very few areas where in it snows. Especially in the hilly regions. Small trains very much server the purpose with safety in these regions. In India Many hilly areas are not connected with train facilities, thus creating inconvenience to the fellow Indians to travel while in snow / winter season. While Indians have the huge potential to travel in winters to these snowy regions, thus increasing the revenue and connectivity to these beautiful places blessed with natural abode. More over these colder regions also provide ideal places for education systems in India. It is thus the priority of the Indian Government to provide its fellow citizens this much needed transport facility in these colder regions.
Wiki: Mountain railway: http://en.wikipedia.org/wiki/Mountain_railway
Rack railway: http://en.wikipedia.org/wiki/Rack_railway
The Brienz Rothorn Bahn (BRB) is an 800 mm (2 ft 7 1⁄2 in) gauge tourist rack railway in Switzerland, which climbs from Brienz, at the eastern end of Lake Brienz, to the summit of the Brienzer Rothorn mountain.
http://en.wikipedia.org/wiki/Brienz_Rothorn_Bahn
The Vall de NĂºria Rack Railway is a mountain railway line in the Pyrenees mountains in the north of the Catalonia region of Spain.
http://en.wikipedia.org/wiki/Vall_de_N%C3%BAria_Rack_Railway
The Montserrat Rack Railway or Cremallera de Montserrat is a mountain railway line north of Barcelona in Catalonia, Spain.
http://en.wikipedia.org/wiki/Montserrat_Rack_Railway
(Google-Video) (Swiss Mountain Trains) (Denver and Rio Grande Western Railroad USA)