"The first regional Transportation Improvement Program carrying MTC's official backing is tentatively required to be complete by January 1, 1976 ... In recognition of that fact ... this TDP revision for 1975/76 is considerably abbreviated. Emphasis is given to information updates as they apply to the 'existing system' description and to a 3-year 'basic plan' for short range transit improvement. Project-specific information is also incorporated into the annual element portion of the program for the first time." p.iii.