What is the full meaning of MUTCD in traffic regulation?

The full meaning of MUTCD is "Manual on Uniform Traffic Control Devices." This document is essential in the field of traffic regulation as it provides a standardized set of guidelines for the design, installation, and maintenance of traffic control devices—such as signs, signals, and markings—across the United States. The goal of the MUTCD is to promote safety and efficiency on the transportation system by ensuring consistency in traffic control measures, which helps drivers understand and predict roadway conditions and rules.

The other options do not accurately represent the established acronym. While similar phrases may suggest concepts related to traffic control, they do not reflect the official title and purpose of the MUTCD as sanctioned by the Federal Highway Administration. The use of "Manual," "Uniform," and "Traffic Control Devices" in the correct answer highlights its key functions and establishes its authority in the realm of traffic regulations.