FMCSA Tests Flexible 14-Hour Clock Pause for Truck Drivers

The Federal Motor Carrier Safety Administration has completed pre-testing for two significant pilot programs that would fundamentally alter how truck drivers structure their workdays. The Split Duty Period Pilot and Flexible Sleeper Berth Pilot programs represent a major regulatory shift toward driver flexibility, with plans for full deployment in 2027. These initiatives directly address longstanding operational friction points—detention time, traffic delays, and fatigue-related pressures—that have constrained driver scheduling for years. The Split Duty pilot is particularly consequential for supply chain operations.

By allowing drivers to pause their 14-hour clock for up to three hours daily during non-driving activities (including on-dock waiting time), shippers and carriers gain newfound scheduling flexibility. However, this flexibility comes with controversy: safety advocates argue the change could effectively stretch workdays to 17 hours, while carriers like Werner Enterprises contend that discretionary breaks reduce fatigue-related incidents. Each pilot will enroll 256 drivers for four-month participation periods, beginning full enrollment in 2027. For supply chain professionals managing freight operations, detention, and driver retention, these pilots signal an inflection point.

Regulatory precedent matters: previous attempts to ease hours-of-service rules (2017, 2020, 2021) stalled at the public comment stage, but this initiative has advanced to real-world testing. The outcome will reshape detention liability, shipper accountability, and capacity planning assumptions across North American logistics networks.