Medicinal Δ⁹‐tetrahydrocannabinol (dronabinol) impairs on‐the‐road driving performance of occasional and heavy cannabis users but is not detected in <scp>S</scp>tandard <scp>F</scp>ield <scp>S</scp>obriety <scp>T</scp>ests

Abstract

Dronabinol (medicinal tetrahydrocannabinol) impairs driving performance in occasional and heavy users in a dose-dependent way, but to a lesser degree in heavy users due possibly to tolerance. The Standard Field Sobriety Test is not sensitive to clinically relevant driving impairment caused by oral tetrahydrocannabinol.