Opioids and traffic safety--focus on buprenorphine

Area of Science:

• Pharmacology
• Neuroscience
• Traffic Safety

Background:

• Opioid maintenance therapy is a primary treatment for opioid dependence.
• The impact of opioids, including buprenorphine, on cognitive function and driving is debated.

Purpose of the Study:

• To comprehensively review studies on buprenorphine's effects on traffic safety.

Main Methods:

• Review of epidemiological and road surveys.
• Analysis of neuropsychological studies, including prospective and randomized controlled trials.
• Assessment of standardized test batteries measuring psychomotor functioning and driving ability.

Main Results:

• Opioids present a moderate accident risk compared to alcohol.
• Single buprenorphine doses impair healthy volunteers, but less than in chronic users.
• Randomized trials did not confirm non-randomized findings of better cognitive performance with buprenorphine versus methadone.

Conclusions:

• Opioids impair driving ability less than other drugs of abuse.
• Factors like personality, comorbidities, and additional substance use affect traffic safety.
• Buprenorphine's cognitive impairment may be less than or equal to methadone, with potentially lower risk under steady-state conditions and higher doses.