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The term "Anti-lock Braking System" was originally coined by Bosch, and the correct German term by Bosch was Anti-Blockier System, hence the ABS acronym. Bosch never actually included the word "brake" in their name. -- Teutonic_Tamer ( talk to Teutonic_Tamer) 10:55, 9 June 2008 (UTC)
Is there any evidence that the English acronym ABS derives from the German name? Because I think it is much more likely that the English abbreviated form would be derived from the English full form: Anti-lock Braking System. Indeed, this is the position taken by the folks at Merriam-Webster [1] , American Heritage Dictionary, and Random House Dictionary [2]. The claim that the English abbreviation is derived (independently) from the German full form and not from the English full form is highly dubious from a lexicographical point of view. nohat ( talk) 03:47, 19 September 2009 (UTC)
The OED says " ABS n. [perhaps originally after German ABS, initialism < the initial letters of Antiblockiersystem] Motoring anti-lock (occas. anti-locking) braking (or brake) system." (ABS, n. Third edition, June 2011; Oxford English Dictionary. Online version March 2012.)
It does only say "perhaps", but still, it's the OED and this article can't very well ignore the premier authority on etymology without very good reason.-- Dennis Bratland ( talk) 17:35, 3 May 2012 (UTC)
Is it true what I've heard? With ABS, drivers can steer out of trouble while braking, they tend to steer to avoid & go right off the road... TREKphiler hit me ♠ 04:36, 1 September 2008 (UTC)
Yes, because a properly operating ABS system under severe brake pedal pressure will never 'lock up' the front axle, and the continuing rolling forward motion allows the driver to make directional changes, dodging obstacles, for example. (Stopped front wheels would not steer the vehicle--and the inertia of forward movement would be the only direction of travel until the skidding tires stopped the vehicle. — Preceding
unsigned comment added by
Homebuilding (
talk •
contribs) 13:46, 22 March 2020 (UTC)
When panic strikes there is no steering. Give up the dream and get real. We need brakes that can stop a car faster. The ABS systems on cars today all fail in the required mission. So then they changed the mission. Pulsing the brakes doesn't work. The brakes need to be moderated instantly by reading the point where kinetic friction turns to dynamic friction on that road at that time. That is the maximum amount of braking that can be supplied through the wheels. After that, air bags in the front grille and whatever else can be used to stop the vehicle. If retro rockets need to be employed, then so be it. The insurance companies should pay for some of the research. Which they do. But the old thinking has to go. —Preceding unsigned comment added by 69.122.62.231 ( talk) 01:31, 13 October 2008 (UTC)
Stock baloney. More nonsense for your amusement. You're driving along and listening to the radio or on your cell. Bang a kid is in the way. You need to stop yesterday. If you could drop a hook you'd do it.
This whole article about anti-lock brakes assumes the reader knows exactly what locking is and what causes it. I have no idea. Therefore I have no idea what it is anti-lock brakes are trying to achieve! 78.105.78.36 ( talk) 07:05, 6 August 2009 (UTC)
The line "On a very slippery surface such as sheet ice or gravel, it is possible to lock multiple wheels at once, and this can defeat ABS (which relies on comparing all four wheels, and detecting individual wheels skidding)." is not entirely correct. In many systems there is a speed sensor attached to the speedometer that detects any high-rate drop in the indicated speed, not compatible with the vehicle's known maximum braking performance, which the computer may interpret as a moving-vehicle-with-locked-wheels situation. Aldo L ( talk) 14:23, 8 March 2010 (UTC)
Nonetheless some vehicles that are on the road exhibit this problem. For instance I have a Lexus 400 that will happily drive into a ditch rather than stop on a gravel road. Greglocock ( talk) 04:57, 9 March 2010 (UTC)
One thing that I noticed wasn't discussed is the relationship between ABS and tire life. On any hard surface, if you were to make a panic stop in a non-ABS car and skid, the locked-up tires can develop flat spots (or even fail completely) where the tire was in contact with the road. Such is not the case with ABS as the tire is essentially rolling all the time, preventing tire damage.
Geforcefly ( talk) 04:37, 19 April 2010 (UTC)
Without getting into the technical bits and trying to factually pick the article over (honestly, I went to school for that already, never again), why does the last few portions look like copy-pasted junk that someone never proofread? I'd put it together myself but it looks like a safety article that got pasted in with no formatting control, and most of it seems irrelevant for a wikipedia entry. Furthermore, "especially when the USA government requires all 2008 and later automotive sold in USA must equip CAN bus.[13]" is not entirely accurate. Vehicles between 8,500 and 14,000 US Pounds GVWR may use SAE J1939, which would include most 3/4 ton pickups and upward. Some newer half tons might fit in there too, but I'm not sure.
Maybe it'd be better to just remove all of the junky portion and start over? It's barely readable as it is, let alone wiki-ey..
Addendum #1: And we seem to have pretty much neglected power-boosting, accumulators, and air brake ABS. The first two I really can't see where to point you except OEM system manuals; as for air brake ABS, I believe Bendix published an "Air Brake Manual" that was available in PDF format for a long time. I can't seem to find it anymore, however. 24.59.103.114 ( talk) 22:41, 5 July 2010 (UTC)
Go for it, that section has been tagged for 2 years, by rights it should be deleted! Greglocock ( talk) 01:07, 6 July 2010 (UTC)
It seems the term 'car' and 'vehicle' are used interchangeably throughout this article. Although a quick check with the Merriam-Webster On Line dictionary leads me to think that this does not result in the incorrect usage of either word it does seem to me to be of poor style. Furthermore it may seem to come readers that a car is a more specific term than vehicle -- in North America a 'car' strictly speaking would be considered a relatively small passenger vehicle in comparison to a 'truck' which is often marketed as a larger vehicle aimed at transporting construction materials. —Preceding unsigned comment added by NoCoolNamesRemain ( talk • contribs) 03:02, 25 July 2010 (UTC)
In the second paragraph of this article someone has written:
"ABS offers improved vehicle control and increases stopping distances on dry and especially slippery surfaces, on loose surfaces like gravel and snow-on-pavement, it can slightly increase braking distance while still improving vehicle control.[1]"
I checked the provided citation and could not find any evidence that anti-lock braking systems can slightly increase braking distances on dry surfaces. All evidence I could find (particularly section 2.4, which refers to track testing of abs systems) suggests that abs systems either slightly decrease or have no effect on stopping distances on dry pavement compared to non-abs systems. The text I quoted is probably just a typo, but we need to double check ourselves and make sure everything we write is factually true. If there are no objections, this sentence should be changed.
Cly8419 ( talk) 22:50, 24 October 2010 (UTC)
See [3] page 23, paragraph 3. ... ... for most manoeuvres stopping distances are smaller ... However ... Also, stopping distance on snow and gravel are greater in ABS vehicle. ... -- mj41 ( talk) 21:36, 26 February 2011 (UTC)
Could someone edit the article to replace, "...various different..." with either, "various" or, "different". I won't be able to sleep nights while it remains as it is. —Preceding unsigned comment added by 81.187.233.172 ( talk) 18:44, 27 March 2011 (UTC)
The earliest automotive application of anti-lock control of braking that I'm aware of is on Duesenberg automobiles in the late 1920s, though it was a mechanical system and obviously not electronic ABS. Someone else may have done it before Duesenberg. Bendix Corporation in the U.S. had some of the earliest patents on electronic anti-lock braking for aircraft landing gear in the 1930s and I believe their system may have been fitted to Douglas aircraft beginning around 1935. Is there someone out there who is sufficiently well-versed on this topic to clean up this article? — Preceding unsigned comment added by Arcas2000 ( talk • contribs) 05:39, 21 August 2012 (UTC)
In the "effectiveness" section, the Munich study's results and its conclusions are at odds. could someone who knows of the study correct this. Sfahey ( talk) 17:17, 30 January 2015 (UTC)
The reason is that ABS is not a passive safety feature. Drivers have to be trained to change how they drive when they have a car with ABS. They have to ignore the strange pedal vibrations when ABS activates. They have to remember that they can steer and brake at the same time. They have to hold the pedal firmly and not try to pump the brakes themselves. Drivers who have been using non-ABS cars for decades can't just change how they drive overnight.
This has led to some contradictory beliefs about safety, such as Risk compensation. The overall data show that safety technology has drastically reduced traffic casualties, yet early studies often show the benefits don't appear right away. You could say the same about air bags -- you need to change behavior to get consistent seat belt use, and move kids to the back of the car, before you see the safety benefits. -- Dennis Bratland ( talk) 18:12, 30 January 2015 (UTC)
I've noticed a fair amount of articles/books that refer to ABS originating from the German word Antiblockiersystem. I was tempted to edit this but wasn't sure how reliable the info was - does anyone know any better? Loweredtone ( talk) 16:37, 24 November 2016 (UTC)
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Anti-lock braking system for motorcycles and this page, Anti-lock braking system should be merged as both focus on the same subject (anti-lock braking system) except one mentions the subject in context of motorcycles while the other does not (a needless distinction) and should be merged. - KAP03( Talk • Contributions • Email) 21:31, 2 September 2017 (UTC)
Some guy comes in and acts as if even though we can say "ATMs" as the plural of "ATM," which is "automatic teller machines," we supposedly "can't do the same thing" with "ABS," as "ABSs" ("anti-lock braking systemS"). What a foolish notion to assume. If we can pluralize "ATM" and "PIN" and "VIN" and "LED" and "LCD," etc. as "ATMs," "PINs," "VINs," "LEDs," and "LCDs," among many other initial abbreviations, then why should we not be able to do that with "anti-lock braking systemS" as "ABSs"?
Also, that same ignorant editor is being uncivil with me by falsely accusing my GOOD-FAITH edit as "vandalism." What say ye there?
174.23.105.242 ( talk) 22:17, 1 September 2017 (UTC)
"ignorant". Chris Troutman ( talk) 22:35, 1 September 2017 (UTC)
Chris Troutman was plainly wrong to summarily revert this, and if he doesn't understand that WP:STATUSQUO is not a license for any random dude to hit the undo button at any time then his edit button should be removed from him. It's possible that there is a better answer here, but anything is better than the current wrongness. Unless someone who actually understands the process by which our encyclopedia is improved suggests a better alternative promptly, then the IP's suggestion should (and will) be restored. Chris Cunningham (user:thumperward) ( talk) 23:33, 1 September 2017 (UTC)
The point of these discussions is to work out acceptable compromises which improve the project, not to score points or win wars. And reporting editors is done solely to prevent ongoing disruption, not to punish past actions. Chris Cunningham (user:thumperward) ( talk) 12:58, 4 September 2017 (UTC)
As proposed (above) I have now completed the first attempt to merge these two articles. So far, it's a pretty basic cut-and-paste & delete, but it's a starting point. Other editors are invited to help smooth off the rough bits! Arrivisto ( talk) 15:53, 28 June 2018 (UTC)
Currently the article says: "Although ABS generally offers improved vehicle control and decreases stopping distances on dry and slippery surfaces, on loose gravel or snow-covered surfaces, ABS may significantly increase braking distance." A snow-covered surface is slippery, so that distinction is nonsensical the way it is written here. Also, three references are provided as footnotes, two of them books to which I don't have access and the third one is a pdf file which I have verified and couldn't find any reference to increased breaking distance by searching for the keyword "breaking distance". It occurs only 1 time in the document in a historic context and does not explain this phenomenon or even say that this is a contemporary conclusion (rather than the result of a superseded test for example, with newer tests showing the opposite to be true). Can someone improve this aspect of the article? -- boarders paradise ( talk) 05:38, 10 December 2018 (UTC)
This article had it's first edit where a difference in English variety could be seen here: https://en.wikipedia.org/?title=Anti-lock_braking_system&direction=next&oldid=24245942 by Greglocock. Please respect the variety of English, and maintain the article in American English. 2A02:C7F:C632:9200:6983:1FD6:B01A:4B21 ( talk) 17:54, 11 June 2020 (UTC)
In 1920 the French automobile and aircraft pioneer Gabriel Voisin experimented with systems that modulated the hydraulic braking pressure on his aircraft brakes to reduce the risk of tire slippage. These systems used a flywheel and valve attached to a hydraulic line that feeds the brake cylinders. The flywheel is attached to a drum that runs at the same speed as the wheel. In normal braking, the drum and flywheel should spin at the same speed. However, when a wheel slows down, then the drum would do the same, leaving the flywheel spinning at a faster rate. This causes the valve to open, allowing a small amount of brake fluid to bypass the master cylinder into a local reservoir, lowering the pressure on the cylinder and releasing the brakes. The use of the drum and flywheel meant the valve only opened when the wheel was turning. In testing, a 30% improvement in braking performance was noted, because the pilots immediately applied full brakes instead of slowly increasing pressure in order to find the skid point. An additional benefit was the elimination of burned or burst tires.
Reading the source given for this - this page and it's following, I see no mention of 1920. In fact, the article is written in 1953.
This is the
talk page for discussing improvements to the
Anti-lock braking system article. This is not a forum for general discussion of the article's subject. |
Article policies
|
Find sources: Google ( books · news · scholar · free images · WP refs) · FENS · JSTOR · TWL |
![]() | This article is rated B-class on Wikipedia's
content assessment scale. It is of interest to the following WikiProjects: | |||||||||||||||||||||||
|
![]() | This article is written in American English, which has its own spelling conventions (color, defense, traveled) and some terms that are used in it may be different or absent from other varieties of English. According to the relevant style guide, this should not be changed without broad consensus. |
|
||
The term "Anti-lock Braking System" was originally coined by Bosch, and the correct German term by Bosch was Anti-Blockier System, hence the ABS acronym. Bosch never actually included the word "brake" in their name. -- Teutonic_Tamer ( talk to Teutonic_Tamer) 10:55, 9 June 2008 (UTC)
Is there any evidence that the English acronym ABS derives from the German name? Because I think it is much more likely that the English abbreviated form would be derived from the English full form: Anti-lock Braking System. Indeed, this is the position taken by the folks at Merriam-Webster [1] , American Heritage Dictionary, and Random House Dictionary [2]. The claim that the English abbreviation is derived (independently) from the German full form and not from the English full form is highly dubious from a lexicographical point of view. nohat ( talk) 03:47, 19 September 2009 (UTC)
The OED says " ABS n. [perhaps originally after German ABS, initialism < the initial letters of Antiblockiersystem] Motoring anti-lock (occas. anti-locking) braking (or brake) system." (ABS, n. Third edition, June 2011; Oxford English Dictionary. Online version March 2012.)
It does only say "perhaps", but still, it's the OED and this article can't very well ignore the premier authority on etymology without very good reason.-- Dennis Bratland ( talk) 17:35, 3 May 2012 (UTC)
Is it true what I've heard? With ABS, drivers can steer out of trouble while braking, they tend to steer to avoid & go right off the road... TREKphiler hit me ♠ 04:36, 1 September 2008 (UTC)
Yes, because a properly operating ABS system under severe brake pedal pressure will never 'lock up' the front axle, and the continuing rolling forward motion allows the driver to make directional changes, dodging obstacles, for example. (Stopped front wheels would not steer the vehicle--and the inertia of forward movement would be the only direction of travel until the skidding tires stopped the vehicle. — Preceding
unsigned comment added by
Homebuilding (
talk •
contribs) 13:46, 22 March 2020 (UTC)
When panic strikes there is no steering. Give up the dream and get real. We need brakes that can stop a car faster. The ABS systems on cars today all fail in the required mission. So then they changed the mission. Pulsing the brakes doesn't work. The brakes need to be moderated instantly by reading the point where kinetic friction turns to dynamic friction on that road at that time. That is the maximum amount of braking that can be supplied through the wheels. After that, air bags in the front grille and whatever else can be used to stop the vehicle. If retro rockets need to be employed, then so be it. The insurance companies should pay for some of the research. Which they do. But the old thinking has to go. —Preceding unsigned comment added by 69.122.62.231 ( talk) 01:31, 13 October 2008 (UTC)
Stock baloney. More nonsense for your amusement. You're driving along and listening to the radio or on your cell. Bang a kid is in the way. You need to stop yesterday. If you could drop a hook you'd do it.
This whole article about anti-lock brakes assumes the reader knows exactly what locking is and what causes it. I have no idea. Therefore I have no idea what it is anti-lock brakes are trying to achieve! 78.105.78.36 ( talk) 07:05, 6 August 2009 (UTC)
The line "On a very slippery surface such as sheet ice or gravel, it is possible to lock multiple wheels at once, and this can defeat ABS (which relies on comparing all four wheels, and detecting individual wheels skidding)." is not entirely correct. In many systems there is a speed sensor attached to the speedometer that detects any high-rate drop in the indicated speed, not compatible with the vehicle's known maximum braking performance, which the computer may interpret as a moving-vehicle-with-locked-wheels situation. Aldo L ( talk) 14:23, 8 March 2010 (UTC)
Nonetheless some vehicles that are on the road exhibit this problem. For instance I have a Lexus 400 that will happily drive into a ditch rather than stop on a gravel road. Greglocock ( talk) 04:57, 9 March 2010 (UTC)
One thing that I noticed wasn't discussed is the relationship between ABS and tire life. On any hard surface, if you were to make a panic stop in a non-ABS car and skid, the locked-up tires can develop flat spots (or even fail completely) where the tire was in contact with the road. Such is not the case with ABS as the tire is essentially rolling all the time, preventing tire damage.
Geforcefly ( talk) 04:37, 19 April 2010 (UTC)
Without getting into the technical bits and trying to factually pick the article over (honestly, I went to school for that already, never again), why does the last few portions look like copy-pasted junk that someone never proofread? I'd put it together myself but it looks like a safety article that got pasted in with no formatting control, and most of it seems irrelevant for a wikipedia entry. Furthermore, "especially when the USA government requires all 2008 and later automotive sold in USA must equip CAN bus.[13]" is not entirely accurate. Vehicles between 8,500 and 14,000 US Pounds GVWR may use SAE J1939, which would include most 3/4 ton pickups and upward. Some newer half tons might fit in there too, but I'm not sure.
Maybe it'd be better to just remove all of the junky portion and start over? It's barely readable as it is, let alone wiki-ey..
Addendum #1: And we seem to have pretty much neglected power-boosting, accumulators, and air brake ABS. The first two I really can't see where to point you except OEM system manuals; as for air brake ABS, I believe Bendix published an "Air Brake Manual" that was available in PDF format for a long time. I can't seem to find it anymore, however. 24.59.103.114 ( talk) 22:41, 5 July 2010 (UTC)
Go for it, that section has been tagged for 2 years, by rights it should be deleted! Greglocock ( talk) 01:07, 6 July 2010 (UTC)
It seems the term 'car' and 'vehicle' are used interchangeably throughout this article. Although a quick check with the Merriam-Webster On Line dictionary leads me to think that this does not result in the incorrect usage of either word it does seem to me to be of poor style. Furthermore it may seem to come readers that a car is a more specific term than vehicle -- in North America a 'car' strictly speaking would be considered a relatively small passenger vehicle in comparison to a 'truck' which is often marketed as a larger vehicle aimed at transporting construction materials. —Preceding unsigned comment added by NoCoolNamesRemain ( talk • contribs) 03:02, 25 July 2010 (UTC)
In the second paragraph of this article someone has written:
"ABS offers improved vehicle control and increases stopping distances on dry and especially slippery surfaces, on loose surfaces like gravel and snow-on-pavement, it can slightly increase braking distance while still improving vehicle control.[1]"
I checked the provided citation and could not find any evidence that anti-lock braking systems can slightly increase braking distances on dry surfaces. All evidence I could find (particularly section 2.4, which refers to track testing of abs systems) suggests that abs systems either slightly decrease or have no effect on stopping distances on dry pavement compared to non-abs systems. The text I quoted is probably just a typo, but we need to double check ourselves and make sure everything we write is factually true. If there are no objections, this sentence should be changed.
Cly8419 ( talk) 22:50, 24 October 2010 (UTC)
See [3] page 23, paragraph 3. ... ... for most manoeuvres stopping distances are smaller ... However ... Also, stopping distance on snow and gravel are greater in ABS vehicle. ... -- mj41 ( talk) 21:36, 26 February 2011 (UTC)
Could someone edit the article to replace, "...various different..." with either, "various" or, "different". I won't be able to sleep nights while it remains as it is. —Preceding unsigned comment added by 81.187.233.172 ( talk) 18:44, 27 March 2011 (UTC)
The earliest automotive application of anti-lock control of braking that I'm aware of is on Duesenberg automobiles in the late 1920s, though it was a mechanical system and obviously not electronic ABS. Someone else may have done it before Duesenberg. Bendix Corporation in the U.S. had some of the earliest patents on electronic anti-lock braking for aircraft landing gear in the 1930s and I believe their system may have been fitted to Douglas aircraft beginning around 1935. Is there someone out there who is sufficiently well-versed on this topic to clean up this article? — Preceding unsigned comment added by Arcas2000 ( talk • contribs) 05:39, 21 August 2012 (UTC)
In the "effectiveness" section, the Munich study's results and its conclusions are at odds. could someone who knows of the study correct this. Sfahey ( talk) 17:17, 30 January 2015 (UTC)
The reason is that ABS is not a passive safety feature. Drivers have to be trained to change how they drive when they have a car with ABS. They have to ignore the strange pedal vibrations when ABS activates. They have to remember that they can steer and brake at the same time. They have to hold the pedal firmly and not try to pump the brakes themselves. Drivers who have been using non-ABS cars for decades can't just change how they drive overnight.
This has led to some contradictory beliefs about safety, such as Risk compensation. The overall data show that safety technology has drastically reduced traffic casualties, yet early studies often show the benefits don't appear right away. You could say the same about air bags -- you need to change behavior to get consistent seat belt use, and move kids to the back of the car, before you see the safety benefits. -- Dennis Bratland ( talk) 18:12, 30 January 2015 (UTC)
I've noticed a fair amount of articles/books that refer to ABS originating from the German word Antiblockiersystem. I was tempted to edit this but wasn't sure how reliable the info was - does anyone know any better? Loweredtone ( talk) 16:37, 24 November 2016 (UTC)
Hello fellow Wikipedians,
I have just modified one external link on Anti-lock braking system. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:
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Anti-lock braking system for motorcycles and this page, Anti-lock braking system should be merged as both focus on the same subject (anti-lock braking system) except one mentions the subject in context of motorcycles while the other does not (a needless distinction) and should be merged. - KAP03( Talk • Contributions • Email) 21:31, 2 September 2017 (UTC)
Some guy comes in and acts as if even though we can say "ATMs" as the plural of "ATM," which is "automatic teller machines," we supposedly "can't do the same thing" with "ABS," as "ABSs" ("anti-lock braking systemS"). What a foolish notion to assume. If we can pluralize "ATM" and "PIN" and "VIN" and "LED" and "LCD," etc. as "ATMs," "PINs," "VINs," "LEDs," and "LCDs," among many other initial abbreviations, then why should we not be able to do that with "anti-lock braking systemS" as "ABSs"?
Also, that same ignorant editor is being uncivil with me by falsely accusing my GOOD-FAITH edit as "vandalism." What say ye there?
174.23.105.242 ( talk) 22:17, 1 September 2017 (UTC)
"ignorant". Chris Troutman ( talk) 22:35, 1 September 2017 (UTC)
Chris Troutman was plainly wrong to summarily revert this, and if he doesn't understand that WP:STATUSQUO is not a license for any random dude to hit the undo button at any time then his edit button should be removed from him. It's possible that there is a better answer here, but anything is better than the current wrongness. Unless someone who actually understands the process by which our encyclopedia is improved suggests a better alternative promptly, then the IP's suggestion should (and will) be restored. Chris Cunningham (user:thumperward) ( talk) 23:33, 1 September 2017 (UTC)
The point of these discussions is to work out acceptable compromises which improve the project, not to score points or win wars. And reporting editors is done solely to prevent ongoing disruption, not to punish past actions. Chris Cunningham (user:thumperward) ( talk) 12:58, 4 September 2017 (UTC)
As proposed (above) I have now completed the first attempt to merge these two articles. So far, it's a pretty basic cut-and-paste & delete, but it's a starting point. Other editors are invited to help smooth off the rough bits! Arrivisto ( talk) 15:53, 28 June 2018 (UTC)
Currently the article says: "Although ABS generally offers improved vehicle control and decreases stopping distances on dry and slippery surfaces, on loose gravel or snow-covered surfaces, ABS may significantly increase braking distance." A snow-covered surface is slippery, so that distinction is nonsensical the way it is written here. Also, three references are provided as footnotes, two of them books to which I don't have access and the third one is a pdf file which I have verified and couldn't find any reference to increased breaking distance by searching for the keyword "breaking distance". It occurs only 1 time in the document in a historic context and does not explain this phenomenon or even say that this is a contemporary conclusion (rather than the result of a superseded test for example, with newer tests showing the opposite to be true). Can someone improve this aspect of the article? -- boarders paradise ( talk) 05:38, 10 December 2018 (UTC)
This article had it's first edit where a difference in English variety could be seen here: https://en.wikipedia.org/?title=Anti-lock_braking_system&direction=next&oldid=24245942 by Greglocock. Please respect the variety of English, and maintain the article in American English. 2A02:C7F:C632:9200:6983:1FD6:B01A:4B21 ( talk) 17:54, 11 June 2020 (UTC)
In 1920 the French automobile and aircraft pioneer Gabriel Voisin experimented with systems that modulated the hydraulic braking pressure on his aircraft brakes to reduce the risk of tire slippage. These systems used a flywheel and valve attached to a hydraulic line that feeds the brake cylinders. The flywheel is attached to a drum that runs at the same speed as the wheel. In normal braking, the drum and flywheel should spin at the same speed. However, when a wheel slows down, then the drum would do the same, leaving the flywheel spinning at a faster rate. This causes the valve to open, allowing a small amount of brake fluid to bypass the master cylinder into a local reservoir, lowering the pressure on the cylinder and releasing the brakes. The use of the drum and flywheel meant the valve only opened when the wheel was turning. In testing, a 30% improvement in braking performance was noted, because the pilots immediately applied full brakes instead of slowly increasing pressure in order to find the skid point. An additional benefit was the elimination of burned or burst tires.
Reading the source given for this - this page and it's following, I see no mention of 1920. In fact, the article is written in 1953.