(a) Pass-through fares.      
        (1) Amount to be reimbursed.                  (A) General. The commission shall establish the level of pass-through fares or shall establish parameters within which the department may negotiate the level of pass-through fares. In establishing the level of pass-through fares or parameters within which the department may negotiate the level of pass-through fares, the commission shall consider whether:                      (i) the project's estimated benefits to mobility warrant a pass-through fare at a level that is more or less than the department's estimate of project costs;                       (ii) the project will result in a significant economic gain or loss to the entity responsible for its development;                       (iii) the public or private entity proposes to share in the cost of the project; and                       (iv) the state or the public or private entity will benefit, and to what extent, if the project is built sooner than would be the case in the absence of a pass-through agreement.                     (B) Limits on pass-through fare levels.                      (i) The commission will not approve payment by the department of a level of pass-through fares that exceeds the department's estimate, except as permitted by this subparagraph. The commission may approve the department's payment of a level of pass-through fares that exceeds the department's current estimate, but only by the difference between the department's current estimate and the department's estimate for the time when the project would likely have been completed in the absence of a pass-through agreement.                       (ii) In determining the level of pass-through fares, the commission will not consider any financing cost incurred by the public or private entity.           
        (2) Payment schedule and method.                  (A) Payment schedule. The schedule of pass-through fare payments will be calculated based on the department's traffic projections for the railway and a number and frequency of payments to be negotiated between the department and the public or private entity. The payment schedule may include a maximum and a minimum periodic amount to be paid annually or in total.                   (B) Variable payments. The pass-through fare may vary on any basis that reasonably reflects the value of improvements, the nature of the railway traffic, or benefits to the highway system, including:                      (i) number, type, and class of passengers;                       (ii) type of freight;                       (iii) tonnage of freight;                       (iv) number or type of cars;                       (v) mileage traveled; or                       (vi) characteristics of track.           
        (3) Allocation of risk.                  (A) Cost overruns and underruns. Unless otherwise authorized by the commission and incorporated in a pass-through agreement by the department, the department's liability under a pass-through agreement shall be neither increased nor decreased by cost overruns or underruns. Pass-through fare payments by the department shall not be increased if there is a cost overrun or decreased if there is a cost underrun unless an adjustment is specifically authorized by the commission and incorporated in a pass-through agreement by the department.                   (B) Traffic volume. If traffic volume exceeds or falls below expectations, the pass-through fare will not be adjusted. Payments shall not exceed the maximum annual amount specified in the pass-through agreement and shall not be below the minimum annual amount specified in the pass-through agreement. The pass-through agreement shall provide that if required, payments shall continue until the total of all payments equals the total pass-through fare amount specified by the commission in approving the pass-through fare.         
      (b) Pass-through tolls.      
        (1) Level of pass-through tolls.                  (A) General. The commission shall establish the level of pass-through tolls or shall establish parameters within which the department may negotiate the level of pass-through tolls. In establishing the level of pass-through tolls or parameters within which the department may negotiate the level of pass-through tolls, the commission shall consider whether:                      (i) the project's estimated benefits to mobility warrant a pass-through toll at a level that is more or less than the department's estimate of project costs;                       (ii) the project will result in a significant economic gain or loss to the entity responsible for its development;                       (iii) the public or private entity proposes to share in the cost of the project; and                       (iv) the state or the public or private entity will benefit, and to what extent, if the project is built sooner than would be the case in the absence of a pass-through agreement.                     (B) Limits on pass-through toll levels.                      (i) The commission will not approve payment by the department of a level of pass-through tolls that exceeds the department's estimate, except as permitted by this subparagraph. The commission may approve the department's payment of a level of pass-through tolls that exceeds the department's current estimate, but only by the difference between the department's current estimate and the department's estimate for the time when the project would likely have been completed in the absence of a pass-through agreement.                       (ii) In determining the level of pass-through tolls, the commission will not consider any financing cost incurred by the public or private entity.           
        (2) Payment schedule and method.                  (A) Payment schedule. The schedule of pass-through toll payments will be calculated based on the department's traffic projections for the highway and a number and frequency of payments to be negotiated between the department and the public or private entity. The payment schedule may include a maximum and a minimum annual amount to be paid periodically or in total.                   (B) Variable payments. The pass-through toll may vary on any basis that reasonably reflects the value of improvements, the nature of the highway, or benefits to other aspects of the highway system, including:                      (i) the number of vehicles using the highway;                       (ii) the number of vehicle-miles traveled on the highway;                       (iii) the condition of the highway; and                       (iv) whether the highway is tolled.           
        (3) Allocation of risk.                  (A) Cost overruns and underruns. Unless otherwise authorized by the commission and incorporated in a pass-through agreement by the department, the department's liability under a pass-through agreement shall be neither increased nor decreased by cost overruns or underruns.                      (i) Projects developed by the public or private entity. If the project is being developed by the public or private entity, the pass-through toll payments by the department shall not be increased if there is a cost overrun or decreased if there is a cost underrun unless an adjustment is specifically authorized by the commission and incorporated in a pass-through agreement by the department.                       (ii) Projects developed by the department. If the project is being developed by the department, the pass-through agreement shall provide that the pass-through toll or the maximum amount payable, or both, shall be adjusted to reflect the department's actual costs unless the commission specifically directs that the department shall bear the risk of cost overruns or underruns.                     (B) Traffic volume. If traffic volume exceeds or falls below expectations, the pass-through toll will not be adjusted. Payments shall not exceed the maximum annual amount specified in the pass-through agreement and shall not be below the minimum annual amount specified in the pass-through agreement. The pass-through agreement shall provide that if required, payments shall continue until the total of all payments equals the total pass-through toll amount specified by the commission in approving the pass-through toll.         
     Source Note:        The provisions of this §5.58 adopted to be effective February 19, 2009, 34 TexReg 1100