At which level is the Quality Assurance program implemented?

The Quality Assurance program is implemented at the state level because this is where specific regulations, standards, and procedures are established and enforced for projects within the state's jurisdiction. Each state has the authority to develop and administer its own Quality Assurance programs to ensure that construction projects meet the required quality standards as dictated by state law and guidelines.

This local governance allows for a tailored approach, taking into account the unique geological, environmental, and logistical factors that each state may encounter. The state's Department of Transportation typically oversees this implementation, creating standards that align with both federal requirements and specifically local needs.

The other levels listed do not directly oversee the specific implementation of quality assurance programs for transportation projects within individual states. While the federal level provides overarching guidelines and funding, the execution is primarily managed at the state level, ensuring relevant and effective applications. Local levels may conduct quality control within projects, but they operate under the framework established by the state. International levels typically pertain to broader standards that may influence countries but are not the direct implementers of state-specific Quality Assurance programs.