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A comment on Never trust a system that seems to be working. Parent comment

Re:Never trust a system that seems to be working by m463 on Monday October 17, 2022 @03:44PM (#33238571)
they didn't always fail safe.

I remember a house at the bottom of a steep mountain grade that got plowed into on a regular basis especially during that time.

EDIT: hmm... seems freezing might still be a way to cause failure?

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Re:Never trust a system that seems to be working by kevinpet on Monday October 17, 2022 @09:48PM (#33242040)
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.
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Re:Never trust a system that seems to be working by m463 on Tuesday October 18, 2022 @07:24PM (#33255453)
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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