Traffic Control Devices, sign number M1-1, which states specifically on page I-1 that: Any traffic control device design or application provision contained
137 24 521 521 1776 217 74 89 117 521 521 The Eye of Providence 87 366 345 90 521 521 "A New order for the Ages" English Great Seal of the United States
DescriptionI-90 (1957).svg English: 24 in by 24 in (600 mm by 600 mm) Interstate shield, made to the specifications of the 1961 MUTCD (specs from Caltrans)