Book excerpt: "TRB's National Cooperative Highway Research Program (NCHRP) Report 806: Guide to Cross-Asset Resource Allocation and the Impact on Transportation System Performance provides guidance and a spreadsheet tool to help managers with applying data-driven techniques to project prioritization, program development, scenario analysis, and target setting. The tool and guidebook are intended to assist managers with analyzing and communicating performance impacts of investment decisions. The software is available online only and can be download from TRB's website as an ISO image."--Publisher's description.