Capacity building
Road maintenance
Road Maintenance Handbook
Updating the International Road Maintenance Handbook Volume IV: Structures and Traffic Control Devices
Updates the International Road Maintenance Handbook Volume IV, focusing on why adaptations and new standards are not being applied in maintenance…
Project ID: TRL 6
Lead: Transport Research Laboratory (TRL)
Workstream: Transport research
At a glance
Region Global
Duration October 2026 – March 2027
Review of the Road Maintenance Handbook Volume IV
Field work on missing adaptations in road maintenance
A retrofit catalogue with guidance
Why are adaptations in the Road Maintenance Handbook Volume IV not being implemented in road maintenance projects?
Research activities
Identify gaps in the manual, practice and institutions
Climate-risk screening and prioritisation of structures
Practical contractual, inspection and retrofit interventions
Training and implementation planning
Planned research outputs
Field-tested inspection and vulnerability-rating tools
Retrofit catalogue with standard drawings and indicative costs
Training materials and integration roadmap
Relevance & uptake
Retrofit catalogue · advice to local authorities · training and roadmap
Implemented by
Transport Research Laboratory (TRL)
Meet us at
Conference participation [tbc]