Which act involves the priority of more inspections for commercial motor vehicles and drivers?

The Motor Carrier Safety Improvement Act of 1999 focuses specifically on enhancing safety within the commercial motor vehicle sector, including the prioritization of inspections for both commercial motor vehicles and their drivers. This Act established important safety standards and regulations intended to reduce accidents and improve overall highway safety. One of its key components was to increase the frequency and thoroughness of inspections, thereby ensuring that vehicles are compliant with safety regulations and that drivers are qualified and fit to operate these large vehicles.

While the other acts included in the options relate to transportation policy and funding, they do not primarily emphasize the inspection and safety standards for commercial motor vehicles in the same way as the Motor Carrier Safety Improvement Act. This Act stood out by directly addressing the need for systematic approaches to safety inspections, making it the most relevant choice in this context.