It would be helpful to have a description of how the rail requirements might differ from a road operation and the facilities which would have to be provided for this option.
Byddai'n ddefnyddiol cael disgrifiad o sut y gallai gofynion y rheilffyrdd fod yn wahanol i weithrediad ar y ffyrdd a'r cyfleusterau y byddai'n rhaid eu darparu ar gyfer yr opsiwn hwn.