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PIARC (World Road Association), founded in 1909 and comprising 125 member governments from all over the world, is the global forum for exchange of knowledge and experience on roads, road transport policies and practices. With consultative status to the Economic and Social Council of the United Nations, the Association is contributing to a stable and sustainable global development of the road and transport sector.

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PIARC International Climate Change Adaptation Framework 2023 – Technical Report

Climate change is a strategic risk to road organisations. Global climate change projections show that there will be gradual changes to average climatic conditions, and changes to the frequency, severity and location of extreme weather events. These climate changes are anticipated to have significant impacts on the design, construction, operation, maintenance and use of global road and transport infrastructure. This is why adaptation principles to address these climate hazard-induced impacts are needed.

The Adaptation Framework (FW) can help organisations identify adaptation principles and increase the climate resilience of transportation assets, operations, and services. Unlike the Framework of 2015, the 2023 version does not include one specific assessment method. Instead, it provides a structure upon which various methods can be applied. It is flexible, based on different levels of expertise, data availability, and resources to suit a variety of situations and specific needs. Case studies are included to provide real-life examples of the different approaches described in the report.

The Framework consists of four main stages according to a suggested sequence:

  • Stage 1 Preparation – identify scope, variables, risks, and data
  • Stage 2 Assessment pathways – assess and prioritise vulnerability and risk
  • Stage 3 Adaptation measures – develop and select adaptation responses and strategies
  • Stage 4 Incorporating findings – integrate outcomes into decision-making processes

In addition to the stages above, optional sub-steps are described and shown as a “honeycomb” that demonstrates interconnections between stages and sub-steps. Stage 2 allows for adjustments to the needs and resources of the user.

The updated Framework emphasises the need to plan for the iteration of adaptation work, reviewing and improving the baseline, and ensure compatibility of adaptation work with other systems and processes to support implementation.

Information sheet

  • Date: 2023
  • Author(s): Comité technique / Technical Committee / Comité Técnico 2020-2023 1.4 Changement climatique et résilience du réseau routier
  • Domain(s): Environment
  • Type: 2023R28EN – Technical Report
  • PIARC Ref.: 2023R28EN
  • ISBN: 978-2-84060-803-5
  • Number of pages: 391