18/08/2026
*** TIPS ON TUESDAY *** Après la sécheresse, le déluge
I'm interrupting the 'Fresh Start: Decoding the Road' articles and posting earlier than usual for a quick practical example of why recognising what's going on around us is so important, and I've butched the Dambusters' biblical motto for this morning's quick reminder:
“After the drought, the flood”.
We may not actually have an actual flood today or over the next day or two, but the forecast finally shows the relentless domination of high pressure over the south of the UK finally beginning to give way, allowing a return to the more usual run of Atlantic depressions.
Why does this matter? Simple answer; rain!
Remember that? It's been something of a north / south split, with bands of rain constantly crossing the north of England, Northern Ireland and Scotland, but it's been a different story over much of the south of England and Wales. Rain is a distant memory here in my parched corner of NW London where it genuinely hasn't rained a drop in over 60 days - two months.
And that means when it does rain, it's going to be slick.
After a long dry spell, the first drops of rain make the surface incredibly slippery because the water mobilises the various surface contaminants that have accumulated; dust, oil, rubber residue and other contaminants are lifted into a thin film.
This is all the muck that normally gets washed away thanks to the UK's usually-regular rainfalls, only this year the problem is worse than usual. The surface contaminants have had a month or more to build up.
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And this year, the combination of an unusual amount of sunshine AND the series of very hot days have also damaged road surfaces. The combination of direct heating from the sun and the high temperatures has softening tarmac in many places. What happens next is that passing traffic — particularly HGVs and buses — drive the stone chips into the asphalt, thus creating shiny strips of exposed tar and resin. This is particularly a problem on south- and south-west facing roads, especially if the road climbs a hill facing the head of the sun.
So here's the first rider message: the first few minutes are the time to treat a wet surface with particular respect.
Here's the second: the surface can change in a fraction of a metre. Look out for shiny patches. The clue is in the word 'shiny'. Surfaces reflect because they are smooth and shiny tarmac has lost the roughness that allows tyres to grip. Anything shiny is slippery and the surface that looked OK on the last bend can be slick a moment later...
..as this police biker found out in North Yorkshire.
There were the inevitable sage-sounding responses about how “after a bit of rain everyone forgets how to drive” or the need to “ride to the conditions”, but this is actually a great practical example of what I was talking about last week; the need to 'Decode the Road' and how riders operate in an environment where:
i. information is partial — the rider never sees the whole road; occlusion is constant.
ii. information is ambiguous — cues rarely point to a single interpretation.
iii. information is unstable — the scene changes faster than the rider can consciously update it.
I explained that new information arrives at frightening speed, meaning the rider’s perceptual model must refresh continuously. In this constantly-changing environment, “situational awareness” cannot mean “having a complete understanding of the situation”.
I'd say “ride to your imagination” because by the time we've seen “the conditions”, it's often too late to adapt. So imagine that the surface gets worse round every corner, at every junction, on every roundabout and anywhere else you need to change speed or direction.
Whilst the contamination will be washed clear if the rain is heavy enough, it won't help the slick surfaces, so treat what you CAN'T see with even more respect that what you can see.
Thanks to Halam for the reminder, and the link to the story on the North Yorkshire Weather Updates page.
https://www.facebook.com/NorthYorkshireWeatherUpdates
So, this has been a kind of Part 1A to the 'Decoding the Road' mini-series and we'll get back to part two next Tuesday.
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17/08/2026
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