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Motorcycle crashes into 18-wheeler then another vehicle, and rider dies, SC coroner says

A Midlands man died a week after being involved in a crash where a motorcycle collided with an 18-wheel tractor trailer before hitting another vehicle, the Sumter County Coroner’s Office said Monday night.

Billy Prosser, a 55-year-old Sumter resident, died Sunday at Prisma Health Richland hospital, Coroner Robbie Baker said in a news release.

On June 10, Prosser was involved in a three-vehicle collision at the intersection of U.S. 521/Camden Highway and South Pike West, according to the release. That’s between U.S. 76 and Broad Street, near the Sumter Mall.

At about 3 p.m., Prosser was driving a motorcycle on Camden Highway when he collided with an 18-wheel truck that was turning on to South Pike West, Baker said. Prosser then hit a second vehicle that was stopped at a stop sign at the intersection, according to the release.

Prosser was not wearing a helmet, Baker said.

No other injuries were reported in the crash that continues to be investigated by the coroner’s office and Sumter Police Department. An autopsy is scheduled Tuesday at the Medical University of South Carolina in Charleston, according to the release.

Through Sunday, 458 people had died on South Carolina roads in 2023, and 50 involved motorcycles, according to the state Department of Public Safety. Last year, 1,091 people died in crashes in South Carolina, DPS reported.

At least 15 people have died in Sumter County crashes in 2023, according to DPS data. Last year, 30 deaths were reported in the county, DPS reported.