(a) Control by Court; Time Limitations. The court shall exercise reasonable
control over the mode and order of interrogating witnesses and presenting evidence
so as to (1) make the interrogation and presentation effective for the
ascertainment of the truth, (2) avoid needless consumption of time, and (3)
protect witnesses from harassment or undue embarrassment. The court may impose
reasonable time limits on the trial proceedings or portions thereof.
(b) Scope of cross-examination. A witness may be cross-examined on any relevant
(c) Leading questions. Leading questions should not be used on the direct
examination of a witness except as may be necessary to develop the witness'
testimony. Ordinarily, leading questions should be permitted on
cross-examination. A party may interrogate an unwilling, hostile or biased
witness by leading questions. A party may call an adverse party or an officer,
director, or managing agent of a public or private corporation or of a partnership
or association which is an adverse party or a witness whose interests are
identified with an adverse party and interrogate that person by leading questions.
The witness thus called may be interrogated by leading questions on behalf of the
adverse party also.