I think our local crash barriers have been magnetised, while out and about this morning I have seen a car side swiping a crash barrier, a car having had a heavy head on into a barrier, and a car parked on top of a double barrier dividing a slip road from the main carriageway, all separate incidents several miles apart. The roads were damp and it is a bright day with good visibility. Is the Christmas spirit flowing already?
And no I did not provoke any of them !
Last edited by: Old Navy on Tue 18 Dec 12 at 15:45
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Could be worse.
www.youtube.com/watch?v=PxWefWbvTrE
Should be required viewing before going out in heavy winter conditions.
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Expected to see a Beetle getting wiped out on that video.........
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>> Could be worse.>>
>> www.youtube.com/watch?v=PxWefWbvTrE>>
>> Should be required viewing before going out in heavy winter conditions.
>>
Three things stand out in most of the incidents in that video.
1/ excess speed.
2/ brakes remaining firmly applied one the vehicle starts sliding....
3/ drivers steering away from the direction of the slide.
What you should do..
a/ keep the speed down.
b/ lift off the brake, than reapply GENTLY!
c/ steer into the slide, the gently start to steer to the direction you wish (need?) to go.
a allows b & c to work, in most cases.
replace a with 1, then then you're stuffed.....
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>> 2/ brakes remaining firmly applied once the vehicle starts sliding....
I've never had ABS brakes, but isn't that how they work - you keep your foot on the brake and it automatically eases off any wheel that is about to lose grip?
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>> I've never had ABS brakes, but isn't that how they work - you keep your
>> foot on the brake and it automatically eases off any wheel that is about to
>> lose grip?
>>
"About to loose grip" is the key, If the tyre has nothing to grip it is useless. It works on a combination of speed and wheel rotation, (I think).
Last edited by: Old Navy on Wed 19 Dec 12 at 12:32
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>> >> 2/ brakes remaining firmly applied once the vehicle starts sliding....
>>
>> I've never had ABS brakes, but isn't that how they work - you keep your
>> foot on the brake and it automatically eases off any wheel that is about to
>> lose grip?
>>
That's pretty much it, sensors on each wheel measure rotation speeds, if one or more vary by much then braking pressure is lowered, on a basic system to all wheels, on modern intelligent systems to the wheel that's about to lock up.
The problem with ABS, is that when all wheels lock (as on ice, or aquaplaning,) then the computer 'thinks' as all wheels are measuring the same speed (zero) that the vehicle is stationary....
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Attractive barriers. - Crankcase
