Truck Jargons - Jack-knife Accident

JACK-KNIFE ACCIDENT
A Jack-knife accident is when the trailer contacts the tractor by the trailer “coming around” on the driver.
>45 degrees = jack-knife inevitable
It is said that once a trailer exceeds a 45 degree angel, compare to the tractor, that a jack-knife is inevitable. This can be caused by many things and happens when the trailer wheels start to skid and actually ends up moving faster than the cab. Usually this happens on icy or wet roads but it can happen on dry roads whe the trailer is empty and the driver has to do some very hard braking.

Now you know! - Truckie
More jargons to come.

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