Coach B1. 2015 coach. All good including cleanliness BUT except Speed. This also reached deatination 45 mints late as onward. Think new TT is too tough to maintain for this train after extension to LPI and even diverted via Rayanapadu with speedup. SC to LPI took 50 mints aprox. As usual train is JAMPACKED WL12 also not cleared i heard with some one not even RAC came to them. this is for 12737 pls.