The raj 's who runs via ( except BCT - NDLS raj ) Mathura jn terminte at NZM , as it is a big terminal & if they want to go NDLS then they have to cross NZM ..
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The raj's run via GZB , Terminate at NDLS , there are no other Big terminal in their route & ANVT is not perfect for Elite trians & it is also outside form heart of Delhi where NZM is in the heart of Delhi..