Well Managed Highway Infrastructure (WMHI) Code of Practice

August 1, 2025

The Well Managed Highway Infrastructure (WMHI) Code of Practice, last published in 2016, is a cornerstone document guiding local highway authorities in the effective, risk-based road safety management of their networks. With the emergence of new technologies, evolving policy landscapes, and shifts in stakeholder needs, it is now essential to undertake a comprehensive update of the CoP to ensure its continued relevance and effectiveness.

This report contains a gap analysis, outlines a recommended approach for commissioning the next phase(s) of work, and includes a delivery plan.

https://www.trl.co.uk/publications/well-managed-highways-infrastructure-code-of-practice-update