Jackknife Accidents

A jackknife accident occurs when a truck's trailer swings outward and forms a 90-degree angle with the cab, resembling a folding knife. These accidents are among the most dangerous truck collisions because the trailer can sweep across multiple lanes of traffic, striking other vehicles and creating chain-reaction crashes. Jackknife accidents are frequently caused by sudden braking, slippery road conditions, improper loading, or equipment failure. The driver may lose all control of the vehicle, and the massive trailer can block entire highways.

Common Injuries

• Traumatic brain injuries
• Spinal cord injuries and paralysis
• Crushed or amputated limbs
• Multiple bone fractures
• Internal organ damage
• Severe lacerations from debris

Key Facts

• Jackknife accidents account for approximately 10% of all truck accident fatalities
• Wet or icy roads dramatically increase jackknife risk
• Improperly loaded trailers are a leading cause of jackknifing
• Anti-lock braking systems (ABS) can help prevent jackknifing but are not foolproof
• Multiple vehicles are often involved, creating complex multi-party claims