Fresh tarmac and drizzle = skating rink

[saaby93]

Mate found this - looks like fresh tarmac + damp and slid into roundabout?

https://www.bbc.co.uk/news/uk-england-gloucestersh...






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https://www.gloucestershirelive.co.uk/news/glouces...

[vaud]

I'd add massive excess speed into that looking at the roundabout damage. That wasn't 40 mph?

[anonymous-user]

A quick bit of Googling and it seems the road might be The Hurricane Road entrance to the roundabout. Seems that the limit is 30 there, but I could be wrong.

I must admit that I’ve always ‘perpetuated’ the idea that fresh rain/drizzle on a sick road surface can be deceptively slippy, but you’d think that actually the friction coefficient is still pretty good, and that it’s not half as bad as you might think. Certainly not like a skating rink at least.

Edited by anonymous-user on Monday 5th July 23:37

[b0rk]

The road / roundabout isn’t on glos highways list of roads for resurfacing in June / July. Whilst the roundabout is wide enough for two cars to pass it’s never to my knowledge been marked out as such. The roads around all are 30mph limits.

If I had to guess it would be as per other posters excessive speed rather than rain.

[Benni]

There are about 1.500 sorts of road/track tarmac, but they all "sweat out" bitumen for weeks after laying,
this makes them more slippery than "bedded in" tarmac in the dry and quite slippery when wet or damp.
In the Netherlands, there are often road signs that translate to "new tarmac, longer braking distance"
coupled with a speed limit.
Asphalt racetracks are known for this this, too, especially when there are only some sections relaid,
the transitions can be very tricky to handle.

[saaby93]

There's a police report somewhere on the web of a fatal elsewhere. They did the run with a police car, braked and instead of the usual screech, there was a whoosh and the car seemed to speed up. A slippery layer of oil formed between the tyre and the road.
If it's damp too..... Or if youre trying to turn and brake and discover that straight on is the preferred course.
Without checking the stats again - arent there around the same number of fatals in 30 limits as other limits?
There will be a set of factors to create a collision situation, road surface is one, the outcome is luck of the draw.

Edited by saaby93 on Tuesday 6th July 00:39