| Many legal and institutional issues need to be resolved before introducing performance-based contracting methods focusing on performance of roads in maintenance phase into Japanese public procurement, which adopts an input-based payment system. This paper identifies performance-based, performance warranty, comprehension, continuity and long term as the concepts constituting these methods, and examines the multiple effects of these methods and the relations between these effects and concepts from the reviews of contracting practices all over the world. Cost reduction for a road agency and benefit increases for users can be achieved by introducing the concepts into road maintenance management under any implementation. This paper proposes applying the Plan-Do-Check-Act cycle with a review function for business processes, as a road maintenance management cycle. Specific methods for improving business processes are also proposed. These proposals can also be indispensable preparations for introduction of performance-based contracting. |
