What technical topics and strategic themes does PIARC cover?

Updated

PIARC (World Road Association) organises its technical work around four Strategic Themes, each broken into numbered Technical Committees. If you want to know whether a specific road or transport topic falls under PIARC's scope, the fastest check is the Technical Committees list on piarc.org: the four themes cover road administration, mobility, safety and sustainability, and resilient infrastructure, and most specialist subjects (pavements, bridges, tunnels, road safety, winter service, decarbonisation) sit under one of them.

The four Strategic Themes

PIARC describes itself as the global forum for exchanging knowledge and experience on roads, road transport policies and practices, founded in 1909 and comprising 125 member governments. Its technical programme is grouped as follows.

Strategic Theme Focus Technical Committees listed on piarc.org
Theme 1 – Road Administration How road organisations are run, financed and made resilient TC 1.1 Performance of Transport Administrations; TC 1.2 Contribution of Roads to Economic and Social Development; TC 1.3 Finance and Procurement; TC 1.4 Planning the Resilience of Road Networks – Climate Change and other Hazards; TC 1.5 Disaster Management
Theme 2 – Mobility Access, movement of people and goods, and new mobility technology TC 2.1 Roads for Accessibility and Mobility in Urban and Periurban Areas; TC 2.2 Roads for Equity, Accessibility and Mobility in Rural and Interurban Areas; TC 2.3 Sustainable Freight; TC 2.4 Road Network Operations and ITS for Sustainability; TC 2.5 Road infrastructure for Connected and Automated Mobility
Theme 3 – Safety and Sustainability Road safety, operations and environmental performance TC 3.1 Road Safety; TC 3.2 Winter Service; TC 3.3 Asset Management; TC 3.4 Environmental Sustainability of Road Infrastructure and Transport; TC 3.5 Road infrastructure for road transport decarbonization
Theme 4 – Resilient Infrastructure The physical assets and how they are built and maintained TC 4.1 Pavements; TC 4.2 Bridges; TC 4.3 Earthworks; TC 4.4 Tunnels; TC 4.5 Decarbonization of Road Construction and Road Maintenance; TC 4.6 Road Design Standards

Two further bodies sit alongside the committees: a Committee on Terminology and a Road Statistics Committee, plus National Committees that coordinate PIARC activity in individual countries.

How to browse topics on piarc.org

The site's navigation exposes the same structure, so you can work from theme to committee to output:

  1. Open the Technical Committees section from the main menu.
  2. Expand a Strategic Theme (for example, "Strategic Theme 4 – Resilient Infrastructure") to see its committees.
  3. Select a committee such as TC 4.1 Pavements or TC 4.4 Tunnels to see the subject area it covers.
  4. Use the site search to find publications, reports or events tied to that committee or theme.

Expected result: you land on the committee or theme page rather than a general "roads" page, which is what makes it useful for checking whether a narrow topic — tunnel safety, earthworks, freight — is actually within PIARC's programme.

Where current topics show up

Beyond the standing committees, piarc.org surfaces active work through calls and events. The homepage currently lists, among other items:

  • A call for evidence for a PIARC Survey on Digital Twins in the Road and Mobility Sector.
  • SURF 2026, the 10th Symposium on Pavement Surface Characteristics, with registration open.
  • The XXVIII World Road Congress, with abstracts open (the page notes a new date of 30 September).
  • PIARC Road Academy sessions, including a new session on Vulnerable Road Users and a webinar on innovative approaches to road asset management.

These are a practical signal of which themes are generating activity at a given moment — digital twins and connected/automated mobility map to Theme 2, pavement surface characteristics to Theme 4, vulnerable road users to Theme 3, and asset management to Theme 3.3.

Choosing where to start

  • If your interest is policy, funding or resilience planning, start with Theme 1.
  • If it is traffic, ITS, freight or automated vehicles, start with Theme 2.
  • If it is safety, winter maintenance, asset management or environment, start with Theme 3.
  • If it is a specific asset type — pavement, bridge, earthwork, tunnel — or design standards, start with Theme 4.

Note that some subjects appear in more than one place: decarbonisation sits both under Theme 3 (transport decarbonisation) and Theme 4 (construction and maintenance decarbonisation), so check both before concluding a topic is not covered.