The number of positive drug tests for marijuana and nearly all other substances identified among truck drivers declined in calendar year 2023 compared with 2022, according to year-end numbers recorded in the Federal Motor Carrier Safety Administration’s Drug & Alcohol Clearinghouse.
The number of annually recorded marijuana positive tests and 13 other positive-tested substances decreased to 61,443 in 2023 from 68,639 in 2022 — a more than 10% decline.
