308.Section 173 gives TfL its power to provide, or secure the provision of, public passenger transport services.
309.Section 174 requires the Mayor to ensure that the general level and structure of fares to be charged on public transport, and the general level of charges made for other facilities, provided or secured by TfL, are set. The Mayor must also ensure that the general structure of routes to be served by TfL public transport services, and the frequency of those services, are set.
310.Section 175 provides that TfL and the Franchising Director will be under a duty to co-operate with each other over the co-ordination of services provided or secured by TfL and franchised rail services overseen by the Franchising Director. TfL and the Franchising Director may enter into agreements with one another for that purpose. (The “Franchising Director” is the Director of Passenger Rail Franchising who is appointed by the Secretary of State to be responsible for arranging and managing the provision of passenger rail services in Great Britain.)
311.Section 177 provides for the retention of the existing powers of London local authorities to procure additional public passenger transport services and facilities from train operating companies, and enables those authorities to enter into agreements with TfL or the Franchising Director for additional public passenger transport services and facilities.
312.Section 178 requires TfL each year to inform certain local authorities in and around Greater London and the London Transport Users’ Committee, of its plans for services, fares and charges.  It also places TfL under a duty to publish the general level and structure of its fares.
Commentary on Sections Part Iv: Transport Chapter Iv: Public Passenger Transport Sections 173 to 178