What does DUI under 625 ILCS 5/11-501 a 6 require?

The provision under 625 ILCS 5/11-501 a 6 specifically addresses driving under the influence (DUI) in relation to the presence of drugs in a driver's system. This statute requires evidence that a driver is under the influence of drugs to the extent that it impairs their ability to drive safely.

In this context, the correct answer emphasizes the importance of demonstrating that drugs are present in the driver’s system. This may involve providing results from blood tests or other chemical analyses that confirm the presence and concentration of drugs, which directly ties to the impairment of driving ability.

The other options do not align with the statute's requirements. The first option implies that DUI charges can be brought without any drug testing, which does not address the legal standards for proving impairment due to drug use. The third option suggests that physical appearance alone can lead to arrests, neglecting the necessity for concrete evidence of drug influence. Lastly, the fourth option indicates that only hearsay evidence is permissible, which is not sufficient for legal proceedings that require solid, admissible evidence to establish a DUI charge based on drug use.