Impaired reaction times can lead to delayed responses to sudden changes in traffic conditions, making accidents more likely.
Truck drivers who use cocaine while on the job risk suffering from a cocaine overdose, which may have fatal consequences. An overdose can occur suddenly, leaving the driver incapacitated and unable to control his or her vehicle. This, in turn, raises the chances of a wreck.
While many truck drivers take urine tests to prove they are not under the influence of drugs, the use of hair tests is less common. While the Federal Motor Carrier Safety Administration disqualifies drivers who have positive urine tests, research shows that they would have disqualified another 58,910 drivers had they relied on hair tests, which reveal cocaine usage.