What is the second most common drug found in the blood of DUI offenders?

The second most common drug found in the blood of DUI offenders is marijuana. This is supported by various studies and reports indicating that cannabis consumption has become increasingly prevalent among drivers. The legalization of marijuana in several states has also contributed to its visibility and use, leading to a significant rise in cannabis-related DUI cases.

Marijuana can impair cognitive functions and motor skills, which are critical for safe driving, similar to the effects of alcohol. Consequently, law enforcement has noted a trend in DUI arrests that shows marijuana is frequently detected along with or instead of alcohol in individuals operating vehicles.

Other substances like cocaine, heroin, and LSD, while they may be detectable in DUIs, do not match the frequency of marijuana usage among offenders, particularly in recent years. The high societal acceptance and use of marijuana among various age groups contribute to its prevalence in DUI cases.