Other Considerations

The 2011
TMUTCD
 provides Figure 4D-3, "Recommended Vehicular Signal Faces for Approaches with Posted, Statutory, or 85th Percentile Speed of 45 mph or Higher," and Table 4D-1, “Recommended Minimum Number of Primary Signal Faces for Through Traffic on Approaches with Posted, Statutory, or 85th-Percentile Speed of 45 mph or Higher” (Shown in Figures 5-2 and 5-3 below). Requirements from the table are a "should condition," The table should be consulted for minimum number and location of primary signal faces for through traffic.
TMUTCD Table 4D-1. “Recommended MinimumNumber of Primary Signal Faces for Through Traffic on Approacheswith Posted, Statutory, or 85th-Percentile Speed of 45 mph or Higher” (click in image to see full-size image)
Figure 5-2. TMUTCD Figure 4D-3: “Recommended Vehicular Signal Faces for Approaches with Posted, Statutory, or 85th Percentile Speed of 45 mph or Higher”
TMUTCD Table 4D-1. “Recommended MinimumNumber of Primary Signal Faces for Through Traffic on Approacheswith Posted, Statutory, or 85th-Percentile Speed of 45 mph or Higher” (click in image to see full-size image)
Figure 5-3. TMUTCD Table 4D-1. “Recommended Minimum Number of Primary Signal Faces for Through Traffic on Approaches with Posted, Statutory, or 85th-Percentile Speed of 45 mph or Higher”