California Code, Public Utilities Code - PUC § 100115.5

(a) The VTA may administer and implement any adopted countywide transportation expenditure plan funded in an amount greater than 50 percent from revenues derived from a retail transaction and use tax, if so designated in the plan or if the VTA and the entity that imposes the tax have entered into an agreement that so provides.  The VTA may exercise those powers necessary to carry out this purpose.

(b) The VTA may do any and all things necessary to ensure the completion of any projects established in a plan as set forth in subdivision (a).  These projects may include, but are not limited to, all of the following:

(c) The VTA shall consult with and coordinate any actions for administering and implementing a plan as set forth in subdivision (a) with the cities in the county, the board of supervisors, and the Department of Transportation.

(d) Nothing in this section shall vary the terms of the cooperative agreement dated July 1, 1999, between the VTA and the County of Santa Clara for the construction of transportation projects utilizing local transaction and use tax revenues derived from Santa Clara County general tax Measure B approved by the voters in November 1996.  If any of the provisions of this section conflict with the provisions of that cooperative agreement, the provisions of the cooperative agreement shall take precedence.