When measures are taken by a party that would have made an earlier injury or harm less likely to occur, evidence of the subsequent measures is not admissible against that party to prove:
* negligence;
* culpable conduct;
* a defect in a product or its design; or
* a need for a warning or instruction.
But the court may admit this evidence for another purpose such as impeachment or-if disputed-proving ownership, control, or the feasibility of precautionary measures.
225 Pa. Code r. 407