Road transport and highways minister Kamal Nath warned states of withdrawing road projects if they failed to expedite land acquisition process on Friday.

Nearly as many as 150 highway projects are facing cost overruns, primarily due to delays in land acquisition.

"If the states do not perform on land acquisition, we will be forced to withdraw the projects in those states...and future projects will be based on the basis of efficiency in land acquisition," Nath told reporters after a meeting with state PWD ministers and Transport Development Council here.

Nath also said if the states fail to sign the state support agreement for road projects they will not be awarded BOT (build, operate and transfer) projects.

"The states which will not sign support agreement will not get BOT projects," Nath warned.