Climate resilience
Capacity building
Rut-Resistant Asphalt Mixes
Laboratory Training on Rut-Resistant Mixes Proposed in Road Note 31
Strengthens know-how on climate-resilient, rut-resistant asphalt through new training for the fifth edition of Road Note 31.
Project ID: TRL 5
Lead: Transport Research Laboratory (TRL)
Workstream: Transport research
At a glance
Region Tanzania, Rwanda
Duration October 2026 – March 2027
New learning tools for the Road Note 31 guide
Focus on tropical and sub-tropical regions
Training in cost-efficient, rut-resistant asphalt mixes
What is best practice for RN31, and which asphalt surfacing design is most climate-resilient?
Research activities
Identify gaps in users’ design knowledge
Hands-on mix design practice for government asphalt technicians
Worked examples in spreadsheets and forms
Prepare roads departments for next steps on resilience
Planned research outputs
Online trainings
Training on social media
Scaling rut-resistant design to other regions
Relevance & uptake
Advice to local stakeholders · online trainings · standardised rut-resistant design for tropical regions
Implemented by
Transport Research Laboratory (TRL)
Meet us at
Conference participation [tbc]