Union executive power: States must not impede Union functions and must follow directions on communications and railway protection. The Union executive power permits the Government of India to direct States to avoid impeding Union functions and to give directions on construction and maintenance of means of communication of national or military importance and on measures for protection of railways; extra costs incurred by a State in complying with such directions must be paid by the Union by agreement or, failing agreement, as determined by an arbitrator appointed by the Chief Justice of India.