The Sustainability Assessment Tool for Pavements (SAT4P) is a user-friendly way to calculate lifecycle greenhouse gas emissions and lifecycle cost benefits of innovative road pavements designs and rehabilitation treatments. 

The SAT4P addresses the capability gap of existing tool limitations which do not have the flexibility to quantify innovative pavements materials, (i.e., recycled) designs, (e.g., crumb rubber asphalt), and processes (e.g., warm-mixes and in-situ stabilisation). 

The SAT4P is used by Main Roads Western Australia (MRWA), Queensland Department of Transport and Main Roads (TMR), and industry partners, to evaluate pavement options in Western Australia and Queensland with a focus on pavement designs or projects that incorporate innovative pavement materials/technologies. 

The tool enables better-informed, long-term investment decision-making regarding alternate pavement design and material selection, and long-term maintenance strategy. 

The Tool’s scope, processes and outputs are also aligned with the Infrastructure Sustainability Council (ISC’s) IS Rating Process. 

The Sustainability Assessment Tool For Pavements (SAT4P) links with Queensland and Western Australian government and departmental policy objectives and targets include: 

• Net Zero GHG Emissions Reductions 
• Circular Economy, Waste Reduction & Recycling Targets 
• Supporting Innovation and Business Growth in Waste Management & Pavement Construction Industries
• Delivering High Performing Road Infrastructure Within Budget Constraints, and  
• Achieving Economic Sustainability Goals Through Reduced Lifecycle Costs. 

SAT4P is a collaboration between the Western Australian Road Research and Innovation Program (WARRIP) and the National Asset Centre of Excellence (NACOE).