It goes way back when RB proposed the induction of LHB for SF category. Was decided that important SF of respective zones will get LHB. Then RM Lalu Prasad announced that SK & Vaishali will be first two trains to get LHB.
As per announcement SK indeed got it and became the first SF train to be LHBfied.
But for some reasons ( God knows ) for Vaishali it was put on halt. Instead Mahabodhi ,Puru and others got it.
People...
more... never minded that bcz of Vaishali's excellent punctuality & cleanliness. But now Since many trains are getting it and there is talk of speed up, these propositions are coming out. Never the less this train will get it sooner or later.