Brake Assist helped me avoid a crunch

I just read a review on the new Vette where they took a professional race car driver and set him loose on a race track and asked him use all the stability control (nanny) setting, including off (there were 3 setting & off) and make the fastest lap with each. The driver said he prefers complete control (off setting) because he is a professional. After all was said and done, all 3 setting on the system cut power to the engine, so he felt his best lap would be the off mode. It turn out that his best lap was with the middle setting. (Which was the moderate setting.) That tells me that as good as someone (a human) can react, today
 
Should have been more explicit

Some very interesting analysis, reactions, & experiences related here. I appreciate it, and have learned some things.

But the thing that I learned from this experience itself (and the reason I decided to start a new thread in the first place) hasn't drawn the comments I had hoped for. I should explain better.

Unless you've grown up with ABS, you may have trained yourself to *modulate *the brakes during an emergency stop. If you don't do this and don't have ABS you can skid without control, and braking distance will be longer due to the higher coefficient of static vs. dynamic friction. I may be worse than average in this area because I spent so many years driving motorcycles where it was imperative not to lock up the front wheel, and there was even a need to adjust the front wheel/back wheel brake proportions during a panic stop. I'd certainly have no strength problem hitting the pedal hard enough, but these reflexes are hard to re-train.

Here's my main point: The advantage of brake assist in an emergency stop is that you can fully concentrate on *steering* to avoid or minimize damage. I know I really felt like I was threading a needle a couple of days ago, and I suspect that if I hadn't been doing the best job of both steering and braking I would have needed some body work.

Koz and others have suggested several different reasons why folks might not get maximum braking effect in an emergency stop. Whatever the reasons, a speedy & automatic system that ensures the best stop can then free the driver up to take other action to improve the outcome. If I was a better driver and could be sure I'd do everything right, even in emergencies, BA would be no benefit. Alas, I'm just not that good.

I agree that there are disadvantages to the "intelligent" systems like VSC, throttle-by-wire, and BA. Some posters have explained them very well. And especially for VSC and the de-throttling, I'd like a dash button that turns them off. On balance, though, I'm quite ok with BA.
 
OUTRNNR said:
OK, I'll agree with you there, but you have to admit that any normal person can stomp on the brake pedal pretty damn fast and the difference in time between when the computer recognizes a BA situation and engages BA and when my foot reaches the floor is measured certainly in fractions of a second, perhaps milliseconds, which does NOT translate to 10-20 feet at any speed that the 4Runner is capable of acheiving. A foot maybe, inches maybe, which yes can make all the difference in the world, but lets not fool ourselves...


"tests with average persons at the wheel produced some highly impressive results: on full braking from a speed of 100 km/h, the braking distance was reduced by up to 33 meters with the help of brake assist."

http://www.conti-online.com/generat...ve/press_archive_2002/pr_2002_03_17_2_en.html

Plenty more on Google.
 
abs_ilst02.gif



A little pic from Mistu. Too bad they don't overlay time.
 
Back to the original story, and off-topic from what everybody else is discussing...
I really think driver's licenses are too easy to obtain. Down here in Houston I see probably 20% of drivers do just what the minivan did to this person. And that is they think in order to make a turn one way, they must veer the car the opposite direction to make a cleaner turn. If you are driving faster than the turn will allow, I agree this may be necessary (so the lesson is don't drive faster than the turn will allow). But everyday I see people who have slowed down to 5 m.p.h. to make a turn (another pet peeve) still veer out into somebody else's lane before making a turn the opposite direction.
Sorry about complaining, I am a very calm person 99% of the time except when driving people really piss me off.
 
Koz said:
I just read a review on the new Vette where they took a professional race car driver and set him loose on a race track and asked him use all the stability control (nanny) setting, including off (there were 3 setting & off) and make the fastest lap with each. The driver said he prefers complete control (off setting) because he is a professional. After all was said and done, all 3 setting on the system cut power to the engine, so he felt his best lap would be the off mode. It turn out that his best lap was with the middle setting. (Which was the moderate setting.) That tells me that as good as someone (a human) can react, today
 

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