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Farewell potholes? UK team invents self-healing road surface

theguardian.com

11–20 of 78 posts

Re: Farewell potholes? UK team invents self-healing road surface

#11
post #6
post #2

That’s good news, but why are the roads in the UK so bad to start with? Is it correct to say that roads are funded from a tax on fuel sales?

Bad relative to what? From my perspective UK roads are a pleasure.

Relative to France, Germany, Holland etc etc

Re: Farewell potholes? UK team invents self-healing road surface

#12
post #2

That’s good news, but why are the roads in the UK so bad to start with? Is it correct to say that roads are funded from a tax on fuel sales?

Chronic underinvestment.

Since ~2010, the UK started cutting costs everywhere. Current costs were harder to cut, broadly speaking investments were cut more. Things like fixing roads was on the list - because a slightly broken road is still mostly usable. But of course that cascades quickly into an unmanageable mess of potholes. It's also one of those things where small frequent repairs are presumably cheaper in the long run than leaving things until you can't ignore them anymore, then having a major repair job to do.

Re: Farewell potholes? UK team invents self-healing road surface

#13
post #9
post #2

That’s good news, but why are the roads in the UK so bad to start with? Is it correct to say that roads are funded from a tax on fuel sales?

Lots of rain and its erosion effects. Nevertheless UK roads are some of the least potholed I have come across. I believe that potholes are the responsibility of councils - so neither (income) tax nor fuel sales are linked to the funding.

You should try more remote areas. If you have to pass another car on the lanes around here, expect to hear your suspension bottom out

Re: Farewell potholes? UK team invents self-healing road surface

#14
> The material could be scaled up for use on British roads in a couple of years, the researchers believe.

As per usual these optimistic solutions are inhibited by cost. All municipalities that I’ve lived in have ignored potholes until the complainants become a choir. It is always cheaper this way.

Re: Farewell potholes? UK team invents self-healing road surface

#15
Would be interesting to see if any municipalities have experimented with self-healing surfaces at small scale to gauge cost-effectiveness. If it reduces long-term maintenance, councils might actually save money instead of just patching potholes endlessly.

Re: Farewell potholes? UK team invents self-healing road surface

#16
post #2

That’s good news, but why are the roads in the UK so bad to start with? Is it correct to say that roads are funded from a tax on fuel sales?

What I've heard (with regards to Irish roads) is that it's several wet months each year where the ground temperature frequently goes above and below zero degrees.

So the water keeps filling any small cracks, freezing and expanding, then defrosting and refilling the now bigger cracks. There's many days in the winter where this process might happen several times over a single 24 hour cycle.

It's basically the worst possible scenario for road longevity, or any kind of buildings.

However, while this sounds plausible, I don't know if it's actually true. I haven't heard it confirmed by a civil engineer.

Re: Farewell potholes? UK team invents self-healing road surface

#17
post #2

That’s good news, but why are the roads in the UK so bad to start with? Is it correct to say that roads are funded from a tax on fuel sales?

At least in the towns and cities, I believe it is because the utility companies can cut up the roads, but the cuts are never repaired to the same quality, allowing water ingress and creating weaknesses that seem to 'seed' potholes.

I used to live in Edinburgh and the roads were like an uneven tar patchwork.

Re: Farewell potholes? UK team invents self-healing road surface

#18
post #2

That’s good news, but why are the roads in the UK so bad to start with? Is it correct to say that roads are funded from a tax on fuel sales?

Yes, fuel duty does bring in a lot of money, but it doesn’t go directly into fixing the roads—it generally goes into the government’s general budget.

Local councils who are responsible for fixing the roads have been underfunded for years and is normally the area that gets squeezed the most. The British weather doesn’t help too with constant rain and freezing winters…

Re: Farewell potholes? UK team invents self-healing road surface

#19
I live in Hungary and the roads here are incredibly bad with millions of potholes. Hot summers and cold winters doesn’t help either.

But what I noticed that if the asphalt has higer mixture of stones (usually they use basalt here) then there are virtually almost no potholes. It’s more loud as the surface is more rough but by my layman experience it’s much more durable. Pure asphalt roads with very little stone content always become pothole minefields quickly.

So I just generally don’t know why higher stone content is not a standard. Probably more expensive and maybe because of the sound too. I don’t think it’s more slippery in wet conditions.

Re: Farewell potholes? UK team invents self-healing road surface

#20

> The material could be scaled up for use on British roads in a couple of years, the researchers believe. As per usual these optimistic solutions are inhibited by cost. All municipalities that I’ve lived in have ignored potholes until the complainants become a choir. It is always cheaper this way.

Cheaper only because you're subsidizing the cost of the road (by delaying maintenance) from the pocket of the road users which will now collectively have to do maintenance on the car slightly sooner on average, with some people getting the brunt of it if they have an actual accident that requires immediate repair. In some worse cases it even makes a road much slower to traverse in order to deal with the constant bumps, basically returning to the quality of a gravel road, which also has potential economic impacts on "trade".
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