Vivek Express: ऊंचे नीचे रास्ते और मंज़िल तेरी दूर.

Not an issue, as i was aware about no reply!!
#
Excerpts from Re# 78758-13 by Mr. Murli,
Trains departing from owning Zone are called UP trains, meaning going upto xxx and are normally positive digits like 2/4/6/ etc.
Down...
more...

trains are returning back to base negatively numbered 1/3/4/7/9/ etc.
#
2391 UP- Shramjeevi Exp (Its 1 @ end, still UP)
4863 UP- Marudhar Exp (Its returning back to base - JU - Still UP)
4015 UP- Sadbhavna Exp (Its returning back to base - DLI - Still UP)
Source: Train Board & Station Display
#
One thing is common for all three - ODD Serial Numbering & all ODD are UP, while their Even Counterpart are DN!!
PS: Its not logic, but fact!! Can be checked out anywhere & any-route PAN-India!!