re: What to do in case of a brake failure! OT: Very very vital thread indeed. I'd urge the moderators to compile all such life threatening or near life threatening what-if driving situtions into one and make it mandatory for at least every new member to read.
Most of the points already stated are useful & effective. However, their effectiveness & deployment depend primarily on: - Situation
- Road condition
- Speed
- First & foremost one needs to know the vehicle being driven. e.g., manual vs automatic
- Under all circumstances one needs to be calm yet alert though natural instinct is more likely to take over in desperate situations
This has been exhibited very well here: Quote:
Originally Posted by konjaril I had my heart in my throat and i just glanced in the rear view mirror ,slowly pulled out the very weak hand brake lever and turned off the ignition switch as my car is an automatic and stopped the car to the road side all at he same time. |
I'd like to augment the following point: Quote:
Originally Posted by torquecurve The advice was, in case of an open road, First Zig Zag the car and try to go on to the shoulder (gravel/sand). This creates more friction between the tyres and surface, helping you to slow down.
In case you are in traffic and realize you lost braking and your speed is below 40 mph (60kph?) Roll down your windows and shout out loudly that brakes have failed. Try pulling to the side of the road use the kerb (follow all the steps listed above as much as possible).
At above 40 mph, try to slow down using your gears as much as possible before doing what has been written above. |
Whether to manoeuvre in a zig-zag fashion or not for greater friction will depend entirely on the 3 points i have mentioned above. Obviously, Indian roads may not be as safe for such manoeuvres even if it looks reasonably empty. There could be lurking pedestrians, animals, cyclists, rickshaws etc that appear from almost nowhere. (I should know for i have undergone 3 surgeries for one similar appear-from-nowhere 'experience' on Delhi road.). However, the brighter side is one is more likely to find sand, gravel, mud, bushes etc alongside Indian roads that may offer better friction / stopping capability.
Regarding applying different techniques depending on the speed (40mph or 64 kmph) i will agree to the following comment for using the engine braking in all situations regardless of the speed, especially on slippery roads: Quote:
Originally Posted by shankar.balan the only way to bring a car to a halt when its brakes fail is to literally ram it into the lowest available gear in the shortest time possible. |
Overall, the discussion has been very well summed up crisply by GTO in the following post: Quote:
Originally Posted by GTO The good news is, brakes rarely fail in modern cars. The bad news is, they still do (rarely)!
In the unfortunate event that your brakes fail, use engine braking....as heavily and aggressively as possible. That's your life saver right there. It's very easy to use engine braking and drop speeds to a pedestrian 20 - 30 kph in little time. At that point, start using the handbrake. Don't yank it up in one strong pull, unless you are at really slow speeds; rather use it gradually. Once you are slow enough, switch the engine off (with the car still in gear) to stop. Remember : Switch the engine off only at crawling speeds as your power steering will also loose assistance.
Easier said than done, but if you have no choice other than crashing, choose what to crash into. E.g. between the back of another car & a biker, it's the car always. Shankar's suggestion of brushing against a wall / footpath to slow down is splendid! |
However, i think that one should not switch off the engine even if the car is slow enough. Should instead try to stop using the handbrakes while keeping the engine running. Quote:
Originally Posted by Ragul For this reason, your car manual may also tell you never to switch off the engine and coast downhill.
--Ragul |
I did try it once on the narrow winding downhill drive & recognised immediately the hazard posed by much stiffer steering & extremely hard brakes!
Last edited by abk : 24th March 2011 at 01:54.
Reason: Typo
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