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Apologies if this has been posted before. I'm trying to get down to the true intention of the parking brake (aka, E-brake, aka emergency brake, etc). I'm guessing most folks first learns that they should use this if there's a hydraulic failure in the regular brake system. While that's certainly true, is that what engineers and car companies intend? I cannot find any official documentation on using the parking brake during emergencies. Furthermore, any references I find always refer to it as a parking brake. The Wiki page is a nightmare. Sources cited are either auto-blog posts or real publications which do NOT mention any intentional emergency usage for parking brakes. I'd love to see documentation from a manufacturer which talks about the parking brake as a backup.
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Jun 17, 2021 14:53
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| # ¿ Apr 26, 2024 00:30 |
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ryanrs posted:The parking brake is for when you're parked. Lots of cars have an ratcheting pedal or an electronic doodad instead of a lever. These are definitely not intended to be used while the vehicle is in motion. This is exactly my thought and why I'm trying to find if there's ever a precedent for using the term "emergency brake." Here's a bunch of Wikipedia info that, as far as I can tell, is just made up. quote:In vehicles with automatic transmissions, the parking brake was originally intended for emergency stopping (for instance, if the foot brake completely failed due to a loss of hydraulic pressure or other malfunction).[3] As safety regulations became more stringent in the 1980s, and modern brake systems became more reliable (using dual-circuit hydraulics and low-brake-fluid sensors),[4] the likelihood of brake failure reduced; in most cases this failure might be indicated through a brake warning light appearing on the dashboard.[5][6] In the event of brake failure, the parking brake lever should be slowly engaged to prevent locking up the wheels and reduce speed.[7] Non of those citations actually state that the parking brake is ever designed or intended for emergencies. Some resources describe how it could be used in such an event, but that's never been described as an official function (and for good reason). No. 6 fucked around with this message at 20:02 on Jun 17, 2021 |
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Jun 17, 2021 19:39
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Or those weird turn handle ones, like you find in old trucks or Cessnas.
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Jun 18, 2021 12:53
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And I think this is the most sensible description. Thanks for posting.
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Jun 18, 2021 14:33
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