truck drivers spend up to 11 hours per day driving, and up to 14 hours per day in driving, fueling, paperwork, vehicle inspections and repairs. long-haul drivers often spend weeks away from home, spending their time off and sleeping at truck stops or rest areas. driving is relatively dangerous work, as truck drivers account for 12% and the highest total number of all work-related deaths, and are five times more likely to die on the job than the average worker. drivers lead generally risk-prone lifestyles due to smoking, lack of exercise, unhealthy eating and work-related injuries. a survey by the national institutes of health found 67% of long-haul drivers were smokers or former smokers. a global meta-analysis found that a large proportion of long-haul truckers take amphetamines to get through long shifts. results varied by country, but in one study 30% of long-haul truckers admitted to amphetamine use while driving. a study that employed drug-testing found that 8% of the drivers tested positive for amphetamine use.