This page shows the common MUTCD standard sizes for the C37(CA) TRAFFIC CONTROL WAIT AND FOLLOW PILOT sign. Use this information to select the appropriate size based on roadway speed, traffic conditions, and visibility needs. All dimensions are in inches.
Standard nominal sizes per MUTCD.
Size selection based on speed, ADT, and roadway environment.
High-intensity reflective sheeting required at night.
Proper mounting height and placement for optimal visibility.
| Nominal Size | Dimensions | Typical Use | Notes |
|---|---|---|---|
| 30 in | 30" × 30" | Low-speed and local roadways | Minimum standard for conventional roads in some cases. |
| 36 in | 36" × 36" | Conventional roads | Common minimum for warning signs. |
| 48 in | 48" × 48" | Conventional roads (California TTC minimum) | CA MUTCD minimum for many work-zone warning signs. |
| 60 in | 60" × 60" | Expressways and freeways | Larger size for high-speed facilities. |
H (Height)For a diamond, Width (W) and Height (H) follow the nominal size at each dimension.
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