Asset Optimiser implements a unique risk-based prioritisation algorithm that balances the need to address condition degradation of asset elements (or likelihood of failure) and the consequence of failure (or criticality) by ranking assets based on their potential risk. 

Risk is assessed to reflect asset structural or functional inadequacy to meet desired performance levels. For each asset, a risk index is calculated as the product of the consequence of failure and the likelihood of failure. Forecasted condition ratings are used as a proxy for the likelihood of failure. Consequence of failure is determined by evaluating a set of rules and weights that involve static or time-dependent risk factors such as functional class, traffic volume, detour length, etc. Calculated risk indices are then used to prioritise assets to reflect urgency of preservation actions. Thresholds of the risk indices are used to indicate relative priority of assets.