Transportation Code, §222.104(b) authorizes the Texas Department of Transportation to enter into an agreement with a public or private entity that provides for the payment of pass-through tolls to the public or private entity as reimbursement for the design, development, financing, construction, maintenance, or operation of a toll or non-toll facility on the state highway system by the public or private entity. Transportation Code, §222.104(c) authorizes the department to enter into an agreement with a private entity that provides for the payment of pass-through tolls to the department as reimbursement for the department's design, development, financing, construction, maintenance, or operation of a toll or non-toll facility on the state highway system by the public or private entity. Transportation Code, §91.075(b) authorizes the department to enter into an agreement with a public or private entity that provides for the payment of pass-through fares to the public or private entity as reimbursement for the acquisition, design, development, financing, construction, relocation, maintenance, or operation of a passenger railway facility or a freight railway facility by the entity. This subchapter prescribes the policies and procedures governing the department's implementation of these statutory provisions.