Part II and Part III of this Act shall apply to every tramway which is hereafter authorized by any Provisional Order or Act of Parliament, and shall be incorporated with such Provisional Order or Act, and all the said provisions of this Act, save so far as they shall be expressly varied or excepted by any such Provisional Order or Act, shall apply to the undertaking authorized thereby, so far as the same shall be applicable to such undertaking, and shall, with the provisions of every other Act or part of any Act which shall be incorporated therewith, form part of the said Provisional Order or Act, and be construed therewith as forming one Provisional Order or Act, as the case may be.