The solution must generate candidate projects with scopes for "3R" projects given current pavement conditions, deterioration models, action costs and post action models, constraints on work types (including existing layer factors that influence practical work types and structural evaluation influences), economic assumptions, and desired pavement conditions at specific periods (at least 5 years) including the possibility of variable inputs and output for each year in the analysis. NOTE: The requirements under 2.1.x also apply under 3.2 but now for "3R" Project Recommendation Process.