California Code, Government Code - GOV § 14525

(a) Not later than August 15, 2001, and August 15 of each odd-numbered year thereafter, the commission shall adopt a five-year estimate pursuant to Section 164 of the Streets and Highways Code, in annual increments, of all state and federal funds reasonably expected to be available during the following five fiscal years.

(b) The estimate shall specify the amount that may be programmed in each county for regional improvement programs under paragraph (2) of subdivision (a) of Section 164 of the Streets and Highways Code and shall identify any statutory restriction on the use of particular funds.

(c) For the purpose of estimating revenues, the commission shall assume that there will be no change in existing state and federal statutes.  Federal funds available for demonstration projects that are not subject to federal obligational authority, or are accompanied with their own dedicated obligational authority, shall not be considered funds that would otherwise be available to the state and shall not be included in the fund estimate.

(d) If the commission finds that legislation pending before the Legislature or the United States Congress may have a significant impact on the fund estimate, the commission may postpone the adoption of the fund estimate for no more than 90 days.  Prior to March 1 of each even-numbered year, the commission may amend the estimate following consultation with the department, transportation planning agencies, and county transportation commissions to account for unexpected revenues or other unforeseen circumstances.  In the event the fund estimate is amended, the commission shall extend the dates for the submittal of improvement programs as specified in Sections 14526 and 14527 and for the adoption of the state transportation improvement program pursuant to Section 14529.