MUTCD 11th Edition (2023)
Section 4D.01 — General
Manual on Uniform Traffic Control Devices, Section 4D.01. Standards, guidance, options and support statements, with figures and cross-references.
Section 4D.01 General Support: 01 The features of traffic control signals of interest to road users are the location, design, and meaning of the signal indications. Uniformity in the design features that affect the traffic to be controlled, as set forth in this Manual, is especially important for the safety and efficiency of operations. 02 Traffic control signals can be operated in pretimed, semi-actuated, or full-actuated modes. For isolated (non- interconnected) signalized locations on rural high-speed highways, full-actuated mode with advance vehicle detection on the high-speed approaches…
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