National Highways Authority Of India [NHAI] — railway transport exempted in toll

Address:

Shakurbasti Delhi, New Delhi, Delhi, 110034

General stores depot shakurbasti northern railway, has a three trucks for loading/unloading of railway materials from the office and with jurisdiction area i. E. Delhi division ambala division and firozpur division.
Kindly tell us that the toll tax will applicable or not.
All truck purchase by ministry of railway. Railway board new delhi
Kindly guideline regarding toll tax exempted.