| Zone-wise Length of Doubling, Tripling and Quadrupling Railway Projects Completed in India (2012-2013 to 2014-2015) | ||
| Zone | Section Completed | Length (In Km.) |
| Central | ||
| Eastern | ||
| East Central | ||
| East Coast | ||
| Northern | ||
| North Central | ||
| North Eastern | ||
| Northest Frontier | ||
| North Western | ||
| Southern | ||
| South Eastern | ||
| South Western | ||
| Southern | ||
| South Central | ||
| South East Central | ||
| South Eastern | ||
| Souther Western | ||
| Western | ||
| West Central | ||
