A \"recent direct observation study\" conducted by Wayne State\'s Transportation Research Group found that younger truckers may buckle up a little less than their older counterparts. During the study, 2,644 commercial vehicles were observed at 181 locations which included \"urban and rural locations in both peninsulas.\" It found that younger truck drivers (under age 29) were \"slightly less likely\" to wear a safety belt, around 70 percent usage, compared with 73 percent usage for truckers ages 30 to 59, and 74 percent usage for drivers age 60 and older. However, seat belt usage for passengers in trucks was significantly lower, the study found, at 53 percent. The study was funded by a grant from the U.S. Department of Transportation\'s Federal Motor Carrier Safety Administration (FMCSA).