At approximately 2:25 AM on June 29, the Buick was traveling west on US Highway 90 in Slidell, Louisiana. Ahead of them, a tractor-trailer had slowed down behind a truck spraying a thick fog of anti-mosquito chemical. The heavy white mist obscured the highway. Harrison, driving at high speed, failed to see the slowed semi-truck in time.
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Jayne Mansfield's autopsy report remains a historical document that strips away the sensationalized Hollywood folklore. It proves that while she did not suffer the mythical fate of decapitation, her life was cut short by a violent, preventable highway hazard—one that ultimately saved thousands of lives through the safety reforms enacted in her memory.
The report concluded that death was instantaneous. Mansfield did not suffer after the point of impact. Toxicology reports also showed that while she had consumed alcohol earlier in the evening, she was a passenger, and her driver's sobriety—or lack thereof—along with the poor visibility, was the primary legal focus of the crash investigation. The Legacy of the Accident: Under-Ride Guards jayne mansfield autopsy report
At approximately 2:25 AM on June 29, the Buick was speeding west along a misty stretch of U.S. Highway 90 near Slidell, Louisiana. Ahead of them, a tractor-trailer had slowed down behind a truck spraying a thick fog of anti-mosquito pesticide, which severely obscured visibility on the road.
: Driver Ronald B. Harrison, attorney/boyfriend Samuel S. Brody, and Jayne Mansfield.
The autopsy revealed multiple traumatic injuries consistent with a high-speed motor vehicle accident. The primary cause of death was determined to be a fractured neck with transection of the spinal cord. At approximately 2:25 AM on June 29, the
The public outcry over the horizontal gap under the semi-trailer—which allowed the Buick to slide beneath it—forced the federal government to act. The National Highway Traffic Safety Administration (NHTSA) mandated that all commercial tractor-trailers be equipped with a rear underride guard.
Almost immediately after the crash, a rumor surfaced and solidified into pop-culture lore: that Jayne Mansfield had been decapitated. This myth was fueled by gruesome photographs from the accident scene showing a blonde wig resting on the shattered windshield, which onlookers mistook for her head. The official autopsy report completely refutes this claim.
, were asleep in the back seat and survived with minor injuries. safety regulations introduced after this accident or information about the recent documentary My Mom Jayne Harrison, driving at high speed, failed to see
The vehicle, a 1966 Buick Electra 225 , was occupied by six individuals:
The accident occurred at approximately 2:25 a.m. on June 29, 1967, on U.S. Highway 90 in Louisiana when her vehicle slammed into the rear of a tractor-trailer. Medical Findings and Injuries
The vehicle, a 1966 Buick Electra, struck the rear of a tractor-trailer that had slowed down due to a mosquito fogging truck. The Buick slid under the trailer, shearing off the top of the car and instantly killing the three adults in the front seat. The Autopsy Findings
First responders and photographers saw what appeared to be a blonde-haired head on the dash or road. In reality, this was Mansfield's blonde wig, which had been thrown from the car during the impact.