In the EU, speed is governed at 56 mph (90kmph) and has been for decades. Driving hours are 45 hours per week, and piece-work pay (by the mile or by the job) is specifically prohibited. Mechanical/electronic logging has been required for decades.
In Australia speed is governed. Hourly pay for all hours worked is now required. Also, in what they call a “chain of responsibility”, if a truck driver causes a crash, all parties to the shipment are potentially liable. In other words, the shipper and receiver know that they had better not do anything that can be interpreted as encouraging reckless or fatigued driving.
In Japan, the speeds are governed at 55MPH.