An 11-hour hours-of-service (HOS) limit within a 14-hour duty period will be maintained for commercial drivers, according to the Department of Transportation's (DOT) Federal Motor Carrier Safety Administration. Under the interim final rule, drivers would have to be off duty for at least 10 hours after an 11-hour run. DOT said the 11-hour maximum maintains improved safety records for commercial drivers. In 2006, the fatality rate per 100 million vehicle miles traveled was 1.94 the lowest ever recorded. DOT said it is also working on a proposed rule to require drivers and trucking companies with serious or repeat hours of service violations to track compliance with on-board recorders. Agriculture enjoys a specific HOS exemption for production related driving.