977
submitted 1 week ago* (last edited 1 week ago) by [email protected] to c/[email protected]

But no, let's cut them down to build one more lane, right?

(page 2) 29 comments
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[-] [email protected] 16 points 1 week ago

Wait, are theses actual measurements? Or made-up numbers?

[-] [email protected] 29 points 1 week ago

Concrete surface in contact with direct noon sunlight is always gonna be scorching hot, 50°C is not far fetched. On a super hot day you can cook an egg on concrete. These surface also tend to heat up slow but also lose heat slowly, which is why even after a couple of hour after sun down it will still feel warm to the touch, creating what is known as urban heat trap.

[-] [email protected] 14 points 1 week ago

Dr. Hannah Fry made a short video about this recently -- this kind of heat retention is why London Underground stations are so bloody hot, because the clay tiles lining the underground tunnels have absorbed heat from trains braking day in and day out and are constantly releasing excess heat into the air at the stations

[-] [email protected] 10 points 1 week ago

Interesting. So adding regenerative breaking to the trains would actually reduce the heat.

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[-] [email protected] 25 points 1 week ago

The photo seems to suggest he is measuring surface temperatures, so I assume they are real. Doesn't seem that far fetched.

[-] [email protected] 19 points 1 week ago

Concrete and dark-colored metal surfaces can absolutely reach those temperatures after a few hours of direct sunlight

[-] [email protected] 3 points 1 week ago

Given that i have kitchen tools that could do this; yes i expect theyre real.

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[-] [email protected] 14 points 1 week ago

Really more than trees, it seems to be an argument for more grass to help reduce temps especially where trees aren't feasible or will take time to grow

[-] [email protected] 25 points 1 week ago

It's primarily an argument to not cut down trees that are already there just so you can build another fucking parking lot or something

[-] [email protected] 11 points 1 week ago* (last edited 1 week ago)

Here they cut them down to make bike lanes.

And before you demand to just take space away from the cars: this is a fast bike lane through a park. The next car is half a kilometer away.

[-] [email protected] 13 points 1 week ago* (last edited 1 week ago)

...that is genuinely bad planning, why would they not route the lane through somewhere there aren't trees, like, say next to the trees?

[-] [email protected] 23 points 1 week ago

Or even better: build bike lanes lined with trees so we can ride in shade!

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[-] [email protected] 6 points 1 week ago

That is the 64 Dollar question.

[-] [email protected] 2 points 1 week ago

Well, see, ...shut up?

[-] [email protected] 9 points 6 days ago

When water shortage is a concern a simple manufactured shade is a sufficient alternative. People can't be expected to walk when it is over 40C under direct sunlight.

[-] [email protected] 8 points 1 week ago

Im surprised the blacktop and what looks like dark gravel was less than the relatively lighter brick.

[-] [email protected] 1 points 1 week ago

If the road is 48°C, so is the parking lot lol

[-] [email protected] 9 points 6 days ago

It's the metal/glass of the car, not the parking lot?

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this post was submitted on 05 Jul 2025
977 points (97.3% liked)

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