Which document serves as a guide for layout and installation of traffic control devices?

The Manual on Uniform Traffic Control Devices (MUTCD) is the correct choice because it is the primary document that provides the standards and guidelines for the installation and layout of traffic control devices on roadways in the United States. It establishes uniform principles to promote safety and efficiency in road traffic by specifying how signs, signals, and pavement markings should be designed and placed to ensure clear communication with drivers.

By following the MUTCD, professionals involved in traffic management can ensure that their layouts are consistent with national practices, which aids in minimizing confusion and increasing compliance among road users. This is crucial in work zone settings where temporary traffic controls are often necessary due to construction or maintenance activities. The MUTCD's comprehensive guidelines help mitigate the risks associated with work zones, making it an essential reference for anyone involved in traffic control planning and implementation.