Friend, the JS have a very high priority on the route and can be called the best intra-SWR or intra-Karnataka train. It should be most popular train on route for short distance travel.
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But in IRI we always speak of a king at the national level, and at his level many does not know the UBL-SBC JS. It is also not amongst top few JSs.(may be due to fact it runs over a mostly single line route)
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If premium fully ac trains like Raj/Shat/Duro/GRs are excluded, the list of kings should be
(1) Karnataka SK (via NGP) (Practically fastest and no.1 choice for passengers)
(2) Karnataka (No-1 for historical importance)
These train traverse very small part of their journey in small SWR zone.
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Udyan express have potential to be pride but slow speed kills its prospects. As a result more Bangaluru people prefer air route.