Rule 702(a1)

Rule 702(a1) was enacted in 2006 (effective for hearings held August 21, 2006 or later) to render admissible two types of expert testimony on the issue of impairment:  (1) testimony regarding the results of a Horizontal Gaze Nystagmus (HGN) test; and (2) testimony from a certified Drug Recognition Expert (DRE) regarding whether a person is … Read more