Mealey's ( March 7, 2023, 12:44 PM EST) -- ALLENTOWN, Pa. — A biomechanical engineer can testify about the force required to operate the liftgate of a truck, but an engineer’s proposed testimony about alternative designs must be excluded because it fails to satisfy the reliability standards of Daubert v. Merrell Dow Pharmaceuticals Inc. and Federal Rule of Evidence 702, a federal judge in Pennsylvania held in denying in part and granting in part the liftgate designer’s motion in limine....