(b) If there was an alcohol concentration of 0.04 or greater but less than 0.08 based upon the definition of alcohol concentration in
KRS 189A.005, that fact shall not constitute a presumption that the defendant either was or was not under the influence of alcohol, but that fact may be considered, together with other competent evidence, in determining the guilt or innocence of the defendant.
The provisions of this subsection shall not be construed as limiting the introduction of any other competent evidence bearing upon the questions of whether the defendant was under the influence of alcohol or other substances, in any prosecution for a violation of subsection (1)(b) or (e) of this section.