What does the prefix "S" on sheet numbers refer to?

The prefix "S" on sheet numbers specifically designates signing and pavement marking plans within the context of civil engineering and roadway design. This designation helps to organize and categorize the various components of a project, ensuring that anyone reviewing the plans can easily identify and locate particular aspects of the work being proposed.

In roadway design, signage and pavement markings are crucial for ensuring safe navigation for vehicles and pedestrians. These plans detail the types of signs to be installed, their locations, any associated roadway markings (such as lane lines and crosswalks), and other relevant information to enhance road safety and functionality. By identifying these sheets with an "S" prefix, it streamlines the process for engineers, contractors, and other stakeholders working on the project, allowing for efficient communication and implementation of design standards.

This categorization contrasts with the other choices, which represent different components of roadway design. Roadway plans encompass the overall layout of roads, lighting plans focus on the illumination systems, and signalization plans detail traffic signals and their operations. Each of these areas has its own specific prefix and format, but the "S" is unequivocally tied to signage and pavement markings.