4:31pm

Mon June 27, 2011
Eastern and Central Kentucky

Collision Reconstruction at Trial

Jurors in the Lexington murder trial of Glen Doneghy (DON’-eh-high) got a brief physics lesson from a KSP collision reconstructionist Monday. Doneghy is charged with killing Lexington police Officer Bryan Durman in a hit and run crash.

Collision expert Richard Parkos says according to Newton’s third law of motion, the Chevy Tahoe that struck Durman and two other vehicles on North Limestone Street should have changed course from the impact of the crash, but didn’t.

“The steering angle that was established, this 10 to 12 degrees, was held throughout the collision. This was a path chosen, driven, and held throughout the collision sequence,” said Parkos.

Parkos used matchbox cars to explain the concept. He told the jury that the driver should have had plenty of time to avoid Officer Durman, who was investigating a noise complaint. The defense denies that the Tahoe was deliberately aimed at the officer, and says there is no proof that Doneghy was behind the wheel at the time of the crash.