123.112  Peace officer as witness.
  Every peace officer shall give evidence, when called upon, of any facts within the peace officer’s knowledge tending to prove a violation of the provisions of this chapter.
[R60, §1578; C73, §1551; C97, §2428; S13, §2428; C24, 27, 31, 35, 39, §1959; C46, 50, 54, 58, 62, 66, 71, §126.14; C73, 75, 77, 79, 81, §123.112]