Which document outlines the standards for maintaining highway safety in Virginia?

The Virginia Department of Transportation (VDOT) Manual is the correct choice because it serves as the comprehensive guide for standards, policies, and procedures related to highway maintenance and safety in the state of Virginia. This manual encompasses guidelines that address various aspects of transportation infrastructure, including design, construction, and operational protocols necessary to ensure safety on the roads.

The manual is a critical resource for engineers, planners, and contractors who work on transportation projects, as it provides specific requirements that help maintain not only the physical conditions of the highways but also user safety. By adhering to the standards outlined in the VDOT Manual, all stakeholders can contribute to minimizing accidents and enhancing overall road safety.

Other documents, while they may address specific aspects of highway safety or management, do not encompass the broad array of standards and guidelines set forth by VDOT, making the manual the definitive source for maintaining highway safety in Virginia.