Road Sections
Define and manage road segments with their physical and geometric details for accurate analysis.
Highway Development and Management v5
The next generation highway economic appraisal tool.
HDM5 is currently under active development through a structured, multi-phase programme. The first public release is expected in 2028. Further details will be published as each phase progresses.
For information and updates: software@trl.co.uk
Economic appraisal for highway investment
A complete toolkit for highway agencies, consultants and infrastructure investors to evaluate the costs and benefits of road interventions.
Traffic Data
Capture historical and projected traffic volumes to power evidence-based planning.
Lifecycle Analysis
Compare alternatives across maintenance, rehabilitation and upgrade strategies.
Prioritisation
Rank projects using economic, social and environmental criteria that match your policy.
Budget Optimisation
Find the optimal mix of works that maximises value within your funding envelope.
Sensitivity Analysis
Stress-test results across key assumptions to understand risk and confidence.