This manual provides guidance for the application of the analytic hierarchy process (AHP) as a decision support tool in road asset management. AHP is a multi-criteria analysis technique that allows trade-off between objectives with different measurement units. With AHP, the user can rank or prioritise a number of options according to their performance in achieving the objectives or assessment criteria. In this manual, the steps involved in applying AHP for the following road asset management activities are demonstrated by examples: ranking maintenance intervention criteria, allocating budget across the different assets and trading-off maintenance intervention criteria across assets to meet budget limits.