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Anti-lock Braking

Tron 3

Member
Nov 1, 2018
200
281
Colorado
Just curious, thinking about regen braking on a slippery surface - would anti-lock breaking be effective in that condition?
With the technology in this vehicle, I would assume so.
Thanks.
 

mswlogo

Well-Known Member
Aug 27, 2018
6,069
4,696
MA, NH
Just curious, thinking about regen braking on a slippery surface - would anti-lock breaking be effective in that condition?
With the technology in this vehicle, I would assume so.
Thanks.

Actually it can be a problem and why Tesla recommends setting regen to low in slippery conditions.
 
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camalaio

Active Member
May 28, 2019
1,483
2,098
Vernon, BC, Canada
I recently had the fun of driving Highway 4 on Vancouver Island. There are some steep twisty sections with some very uneven and patchy pavement.

The uneven pavement on these twisty downhills had a very observable effect on regen when watching the "regen bar". It would jump all over the place, likely in reaction to available traction as the road surface rapidly changed. I found this incredibly interesting as I had it in mind to turn regen to "Low" for winter as recommended by Tesla, but they definitely seem to be accounting for available traction with "Standard" regen. Of course, by the time the car is compensating for available traction, it's because it's already noticing some lack of traction and may have put you into a bad situation in Winter, so there's that.

So that's just about regen which I really wanted to talk about given my recent trip. But in regards to ABS, slippery surfaces (or rather, applying more braking force than available traction can give) is exactly what ABS was designed for in all vehicles. It is effective in those conditions for maintaining control of your vehicle, as it is for any modern vehicle with ABS.

Notably, this is something Tesla initially messed up with the Model 3 and fixed with a software update.
 
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