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Table 2C-3. Minimum Size of Supplemental Warning Plaques
Rectangular Plaques
Size of Warning Sign 1 Line 2 Lines Arrow
600 x 600 (24 x 24)
750 x 750 (30 x 30) 		600 x 300 (24 x 12) 600 x 450 (24 x 18) 600 x 300 (24 x 12)
900 x 900 (36 x 36)
1200 x 1200 (48 x 48) 		750 x 450 (30 x18) 750 x 600 (30 x 24) 750 x 450 (30 x 18)


Table 2C-3. Minimum Size of Supplemental Warning Plaques
Square Plaques
Size of Warning Sign Square
600 x 600 (24 x 24)
750 x 750 (30 x 30) 		450 x 450 (18 x 18)
900 x 900 (36 x 36)
1200 x 1200 (48 x 48) 		600 x 600 (24 x 24)

Notes:

  1. Larger supplemental plaques may be used when appropriate
  2. Dimensions are shown in millimeters followed by inches in parentheses and are shown as width x height

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