Semi-truck accidents represent a serious hazard here on our Utah roads. Major roads such as the I-15, the I-80 through Parleys Canyon, and I-70 carry high volumes of commercial traffic, contributing to the large number of trucks compared to other states. Crashes involving semi-trucks can be catastrophic and result in significant injuries and even death each year.
In recent years, Utah has recorded dozens of fatal crashes due to semi-truck accidents, with many of these occurring on these high traffic roads.
While professional truck drivers undergo rigorous training and are subject to strict federal and state regulations, accidents still happen. In this article our Utah semi-truck accident attorneys will outline the most common causes of semi-truck accidents,.
The Most Common Causes of Semi-Truck Accidents
Driver Error (Recognition, Decision, and Performance Issues)
Driver-related factors remain the leading contributor to large truck crashes. These crashes are caused by a variety of factors including inadequate surveillance (failing to notice hazards), poor decision making (such as improper lane changes or misjudging gaps), and performance errors (overcorrecting or delayed reactions). Here in Utah these driver issues can be all too common as our highways feature steep grades, heavy congestion, and variable weather, these errors can quickly escalate into severe collisions.
Fatigue and Hours-of-Service Violations
Long haul drivers face demanding schedules which can lead to fatigue. Fatigue or drowsiness can significantly impact a drivers ability to make quick decisions. This is why the federal government has imposed regulations on driving hours to prevent fatigue while driving. Unfortunately violations still occur as drivers face pressures to meet deadlines, they may drive past their limits and drive while drowsy.
Speeding or Driving Too Fast For Conditions
Speeding ranks among the top driver-related causes. Trucks require substantially longer stopping distance, often several football fields at highway speeds, making excessive speed especially dangerous. In Utah, adverse conditions such as winter ice, snow, or high winds on mountain passes amplify this risk, contributing to loss-of-control incidents.
Vehicle Maintenance Issues (Brakes, Tires, and Other Components)
Mechanical issues, including brake problems, tire failures, and cargo shifts, account for roughly 10% of crashes. Trucks have multiple axles and heavy loads, placing greater stress on components. Poor maintenance or failure to conduct required inspections can lead to catastrophic failures, particularly on Utah’s mountainous terrain where braking demands are intense.
Distracted Driving and Other Non-Performance Factors
Distractions, impairment (from fatigue, illness, or substances), and aggressive driving also play roles. Although less frequent than recognition or decision errors, these behaviors remain significant contributors nationwide and in Utah.
Semi-truck accidents often result in severe injuries due to the size and weight disparity between commercial vehicles and passenger cars. Understanding the primary causes, predominantly driver error, fatigue, speeding, and mechanical issues—highlights the importance of vigilance from all road users. When an accident occurs, however, determining liability can be complex, involving federal regulations, electronic logging data, maintenance records, and Utah’s comparative negligence laws, which makes it crucial to hire a Utah semi-truck accident attorneys.
If you or a loved one has been injured in a semi-truck accident you deserve help. Contact our team of the best Semi-truck accident attorneys in Utah to get your case started. Our attorneys will work tirelessly to build your case from gathering evidence, to presenting your case to an insurance company, and negotiating on your behalf. We will fight tirelessly to get you the compensation, and justice you deserve. If you have been injured do not suffer alone, give our team a call today for a free consultation and to discuss your next steps.

