Reflections from PIARC Chambéry 2026
A few thoughts after the World Road Congress
Snower visited PIARC 17th World Congress on Road Winter Service, Resilience and Decarbonisation held in Chambéry, France. Generally, it was a well-held event with interesting seminars, great exhibition and of course discussions with old and new friends. Here are some thoughts and reflections from the event.
Good decisions need good data — and there's still work to do
As expected, AI and automation were all over the programme this year. Smarter spreading decisions, up-to-date maintenance, road condition nowcasting and forecasting — the ambition is real, and the tools are getting genuinely capable. But the thread running through almost every honest conversation was the same: none of it works without quality weather and road condition data as the foundation. As decisions become more automated and further removed from the road surface itself, the need for accurate, localised measurement only grows. Rural roads, secondary networks, the places that have historically been underserved — these are where the data gaps hurt most, and where the case for better ground-level data is strongest.
Rural areas kept being mentioned, then forgotten
There was genuine acknowledgement that coverage gaps in rural and secondary road networks are a problem. The importance of these roads came up repeatedly. What was less clear was how the field actually plans to address them. The conversation tends to drift back toward motorways and high-traffic corridors, where the numbers justify the investment most easily. That gap between stated priority and actual resource allocation felt like unfinished business.
Sharing data is easy to agree on, hard to do
Most people agreed that data sharing and cross-agency collaboration are the future. Connected sensors, edge devices, satellite networks — the inputs are there. The harder conversations were about what happens next: who acts on the data, and how agencies coordinate during severe events. The organisational and process side of this is still well behind the technology side. Data only helps if it actually gets shared and used.
Decarbonisation and operational reality need an honest conversation
The direction is clear — electrification of transport. Road users are increasingly moving toward electric fleets. Heavier EVs put more load on road structures that weren't designed for them, and therefore maintenance need is different. Connectivity between vehicles and road weather infrastructure is increasing all the time. Sharing real-time road conditions and friction coefficients is where things are heading.
One point that came through clearly: winter maintenance of walking and cycling infrastructure is something that needs more attention. If the cycle path is always last to be cleared, the modal shift doesn't happen. Winter maintenance needs to happen across all modes of transportation.
No single solution — but one common thread
PIARC in Chambéry was a good reminder of how international these challenges are, and how much shared ground there is across very different climates and contexts. Different approaches are used to tackle winter road conditions. Salt spreading, ploughing, and some genuinely novel methods are making their way into the conversation (even laser technologies for melting the snow). The thing is that all of these can be optimised. And that's where the need for accurate data keeps coming back.
Whatever the method, the conversations in Chambéry kept landing in the same place: better measurement of road and weather conditions is what enables better decisions.
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