Trucking and Transportation Litigation

Collision Types

Jackknife Collision

Jackknife Collision

Jackknife Collision

Jackknifing results from loss of traction between the trailer and the tractor, commonly from braking on a slippery surface, excessive speed in a curve, or improper braking with an empty or light trailer.

Antilock and stability control systems reduce but do not eliminate the risk.

Alternative Names:

Jackknife, Trailer Swing

Why it Matters?

Jackknife cases turn on whether the driver's speed and braking were appropriate for the conditions, since the maneuver is generally within the driver's control. Engine control module data showing speed and brake application is usually decisive, and weather and road condition evidence establishes what a reasonable driver should have done. Equipment issues including brake balance and stability system function are the alternative causation theory.

Frequently asked questions

What causes a jackknife?

What evidence is most important?