Sts. & Hy. Code, § 31474

(a) SANDAG may only impose tolls under this chapter for entrance to or the use of the corridor. To the extent provided in an agreement under Section 31483, this restriction does not apply to any toll, portion of a toll, or portion of toll revenue transferred by SANDAG to another party to an agreement under Section 31483. This subdivision does not limit uses of toll revenue authorized by this chapter.

(b) SANDAG shall review the adequacy of the toll rates established to cover the aggregate costs of all projects within two years following the opening of the initial project to be supported by toll revenue under this chapter and at least biennially after the initial review for so long as SANDAG imposes tolls under this chapter.

(c) (1) SANDAG’s toll structure may include discounts and premiums to encourage efficient use of projects and reduction of congestion and emission of greenhouse gases, including, without limitation, discounts for high-occupancy vehicles, electronic toll collection, and off-peak travel, and premiums for on-peak travel.

(2) SANDAG shall revise or eliminate any free or reduced-rate toll rate schedule adopted pursuant to paragraph (1) as necessary to ensure compliance with obligations described in subdivisions (b) and (f).

(d) SANDAG’s toll structure may include adjustments to toll rates to reflect economic factors, including, but not limited to, the Consumer Price Index or other cost indices.

(e) SANDAG’s toll structure shall reflect the toll setting policies and procedures set forth in any agreement under Section 31483.

(f) Notwithstanding subdivisions (a) to (e), inclusive, tolls under this chapter shall be maintained at rates sufficient to meet any obligation secured by a pledge of revenues under this chapter, and covenants set forth in any related resolution, indenture, or constituent instrument.