attorney photo

“I have been prosecuting serious injury and wrongful death cases against trucking companies, auto makers and tire manufacturers for more than 30 years. Our firm maintains this blog to share information and insight on transportation safety issues that continue to arise on our nation’s highways and roads.”

Source: San Luis Obispo County Fire Department

Excavator rolls off semi-truck, kills Pyong Yun Song on impact

San Luis Obispo County, Calif. — A 60-year-old Nipomo woman was killed Sept. 2 when a construction excavator fell on her car as she exited Highway 101 in Nipomo.

The California Highway Patrol identified the woman as Pyong Yun Song of Nipomo.

A semi-tractor trailer truck carrying the excavator was northbound on Highway 101 when its front-right tire blew out, causing its 62-year-old driver to lose control of the truck, according to a local news report. Driven by an Arroyo Grande, Calif. man, the truck then veered off the roadway of Highway 101 and struck a metal guard rail before the excavator rolled off the vehicle and fell onto the woman's car.

The woman was killed on impact and pronounced dead at the scene of the crash, according to local news reports. Another vehicle stopped on the offramp was struck by debris from the accident, but the driver was not injured.

The San Luis Obispo CHP division is investigating the fatal accident.


It is apparent that this tragic accident was the result of an unfortunate series of events. However, regardless of the series of events that lead to Ms. Yun Song's death, the accident was likely avoidable. It is evident from the news report that had the semi truck's tire not failed, Ms. Yun Song would likely still be with us today.

I have been seeing more tire failures on big rigs than on passenger vehicles lately. Something is wrong, causing these tires to fail in a similar way with similar results. My firm is continuing to investigate many of these cases. Getting the tire tread pieces and the tire for inspection is critical to determining if the tire failure was due to a manufacturing flaw or defect. I believe that there is at least one manufacturer with a very significant and recurring problem that warrants a major recall.


For over three decades Rob Ammons has concentrated his practice on tire and automotive defect claims, representing clients against tire manufacturers, automakers, tire retailers, and tire service centers. Mr. Ammons’ success against Michelin, BFGoodrich, Uniroyal, Cooper Tire, Goodyear, Dunlop, Bridgestone/Firestone, Continental/General Tire, Kumho Tire, and Yokohama has led to the recall of millions of tires across the country. If you or your loved one have been injured from a defective tire, reach out to Rob Ammons now for a no-cost consultation.

Disclaimer:  At Ammons Law, we are constantly seeking to improve the quality and safety of our roads and highways. We post these articles to help improve safety within our community. All of the information contained within this post was compiled from public sources or constitutes the opinion of the author. Please inform us immediately if you identify any false or misleading information.

Why Choose Us?

Our Firm Will Fight for Your Right to Compensation
  • We Wrote the Book on Tire Defect Litigation

    Attorney Rob Ammons has not only handled some of the most complex tire defect cases but also wrote the book on how to properly litigate these types of cases.

  • Team Approach to Handling Each & Every Case

    Unlike smaller law firms, we have the resources necessary to tackle even the most complex cases. To ensure our clients get the best possible results, we hire industry experts and other professionals to advise on any complex legal issues.

  • Over a Billion Dollars Recovered for Our Clients

    Our seasoned legal professionals have handled some of the largest personal injury claims nationwide and have a strong track record of favorable outcomes.

Let Us Help You


Call (281) 801-5617 or fill out the form below to contact our team.

  • Please enter your first name.
  • Please enter your last name.
  • Please enter your phone number.
    This isn't a valid phone number.
  • Please enter your email address.
    This isn't a valid email address.
  • Please make a selection.
  • Please enter a message.