With every passing day, there is a rapid increase in people traveling from one point to another. There is a huge responsibility to drive safely so that the rate of accidents can be lower. People driving large vehicles are at higher risk to be the reason of accidents so they must be assessed for their medical impairment and to confirm that they are not under the influence of drugs to avoid a dangerous outcome. What is DOT Drug Test? Transportation companies and truck drivers performing safety-sensitive work have to go through drug testing program under the law implemented by the Department of Transportation (DOT). When DOT Drug Test is performed? Employees working in sensitive workplaces should be drug tested under following scenarios: 1. Pre-employment 2. Reasonable Suspicion 3. Random Drug Testing 4. Post-accident 5. Return-to-duty Process 6. Follow-up Drug Testing