Failure at the bottom of a steep hill is a different type of failure caused by b... | Hacker News

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		kevinpet on Oct 18, 2022 \| parent \| context \| favorite \| on: Never trust a system that seems to be working Failure at the bottom of a steep hill is a different type of failure caused by brake fade due to the brake drum swelling with heat as the truck goes down the hill.

m463 on Oct 18, 2022 [–]

But I believe at some point air brakes had to be reversed by law.

In other words, the brakes would apply on loss of pressure, instead of via pressure.

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