A field test of the 34-hour restart provision of the new hours-of-service rule shows that the restrictions improve safety, the Federal Motor Carrier Motor Safety Administration reports.

The provision requiring drivers to take two successive periods off between 1 a.m. and 5 a.m. during their restart is more effective at combatting fatigue than the earlier rule, according to the field test, the agency said.

The provision, which many trucking companies oppose, has been the source of considerable political controversy. Truckinginfo.com will post more details soon.

UPDATE: Click here for more details.