Final answer:
Driver physical qualification standards are regulated by the Department of Transportation and are found within Title 49 of the Code of Federal Regulations, Part 391. The current standards became effective as of December 28, 2015, transitioning from the previous 2008 standards.
Step-by-step explanation:
The driver physical qualification standards are cited in the regulation that was signed into final rule on October 1, 2015, and became effective on December 28, 2015. This rule encompasses the guidelines that drivers must meet in terms of their physical health to be considered qualified for driving certain types of vehicles. The 2008 standards were also in effect alongside the new standards for a period, however, a transition to the exclusively current (2015) standards is managed by the implementation rule for those standards.
In terms of regulatory specifics, the physical qualifications for drivers are detailed by the Department of Transportation (DOT) in the United States. Such standards are commonly found within Title 49 of the Code of Federal Regulations (CFR), Part 391, which addresses medical requirements and certifications for commercial drivers. This rule ensures that drivers of commercial vehicles are physically able to perform their duties safely.