Commonwealth Numbered Regulations Commonwealth Numbered Regulations(1) A party wanting to cross-examine a single expert witness at a hearing or trial must i nform the expert witness in writing, at least 14 days before the date fixed for the hearing or trial, that the expert witness is required to attend.
(2) The court may limit the nature and length of cross-examination of a single expert witness.
(3) Unless the court otherwise orders, a party who requires a single expert witness to attend court for cross-examination must pay the reasonable fees and expenses of the single expert witness's attendance.
Note: Rule 12.31 sets out the circumstances in which an amount paid for attendance by an expert at a hearing is a disbursement properly incurred in a proceeding.