In this respect, no formal procedure for collecting periodical financial data from operators has been instituted. The framework does not include periodical adjustments that respond to cost increases, and there is no clear procedure for determining what affordable tariffs are. Just as in the case of the microbus framework, rigid and discretionary fares can impose major restrictions on guaranteeing high-quality services. Furthermore, without a transparent fare calculation and adjustment formula, the framework continues to fail to offer certainty for operators on their ability to recover investments or have future cost increases reflected in their revenues.