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Matthew Diehl, of Elkridge, was behind the wheel of a 2021 Toyota Corolla when he struck the trailer on the southbound side of Route 1 at Blue Stream Drive around 2 a.m., county police said.
Diehl was the only person in the car and was pronounced dead at the scene, police said. The tractor trailer driver was uninjured.
The area of Route 1 where it happened was closed for more than three hours because of the crash. Police are now looking into what caused the accident.
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