The Sustainability program represents the largest proportion of the NACOE program, with roughly half the total projects and half the total investment. This program comprises of a number of sub-programs, including asphalt, unbound granular and marginal materials, stabilised / modified pavements, surfacing and a number of technology projects. 

The Sustainability program has the potential to deliver very significant cost savings compared to current practices, allowing for more road projects to be constructed.

The Sustainability program has a strong focus on collaborating with industry to ensure implementation.

Major findings to date can be found in the Annual Highlights Report.