67.The provisions in section 12 remove the previous joint duty on PTAs and metropolitan district councils in a passenger transport area to produce a local transport plan under section 108(1)(a), and place the duty in future solely with the ITA (see section 9). The duty in section 108(1)(b) to carry out functions so as to implement those policies continues to apply to metropolitan district councils, who will also in this respect be subject to the new duty in section 108(2ZB) to have regard to certain policies and guidance relating to the protection or improvement of the environment.