If you drive Route 3 or I-93 near Quincy, you share the road with large commercial trucks every day. When one jackknifes or rolls over, the results can be catastrophic. These crashes are preventable, and if you have been injured in one, understanding the cause can change everything about your claim.
What makes a truck jackknife or roll over
A jackknife happens when a truck’s trailer swings outward and folds toward the cab, sweeping across multiple lanes in seconds. A rollover is when the truck tips onto its side, often taking out whatever is in its path. Both are frightening to witness and devastating to be near.
These crashes are almost always the result of the truck losing control, and the cause usually traces back to decisions made long before the truck reached the highway.
How driver fatigue turns a highway into a hazard
Most commercial truck drivers are subject to federal hours-of-service rules set by the Federal Motor Carrier Safety Administration (FMCSA), which limit how long a driver can be behind the wheel before a mandatory rest period.
A fatigued driver reacts more slowly, makes poorer decisions and is far less equipped to handle a sudden situation, such as a sharp curve or a braking car ahead, that can send a large truck into a jackknife or rollover. When trucking companies push drivers past safe limits to meet delivery deadlines, everyone on the road bears that risk.
How improper loading triggers a jackknife or rollover
Improper loading is one of the most common causes of both jackknife and rollover crashes. Federal regulations require commercial cargo to be firmly secured before a truck moves. When that does not happen, weight can shift unexpectedly during braking or turning, which is often all it takes to trigger a rollover or cause a jackknife.
What this means if you were injured near Quincy
Jackknife and rollover crashes are rarely the result of bad luck. When investigators look closely, they often find hours-of-service violations, loading errors or both. In Massachusetts, if you are injured in a truck accident, you may have legal options against not just the driver, but the trucking company or cargo loader responsible for the crash, provided your own share of fault does not exceed 50%.
A truck accident is not the same as a regular car crash. The parties involved, the regulations at play, and the evidence that matters are all different. That is why getting legal guidance early can make a significant difference in protecting your rights before critical evidence disappears.

