wat he said could be the fact Bhookmari Ji, there are so many salt farms to make salt in this area and this stretch passes right through it and is a little elevated and in a step curve too..In that portion there are Speed restriction boards of 10kmph and 20kmph after a while..train never exceeds 20 for the first 7kms..when the track enters the plains again, it speeds up a little...
@pragadesh: Thanks for the info..