Chapter 3 · Interstate System 03 / 12

Engineered for 70 MPH

1
Clarity at distance
Overpass letterforms tested for recognition at 600 feet, day or night, in all conditions.
2
Color that cuts through
Green-white-blue palette holds contrast through rain, fog, and direct headlight glare.
3
Standardized everywhere
MUTCD compliance means the same visual language from Maine to California, no exceptions.
4
Built to outlast
Retroreflective materials rated for 12 years of sun, salt, and freeze-thaw without fading.
This is the Interstate Highway Shield design system, applied by Curio Design — a design-style library for AI agents. Full Interstate Highway Shield guide → designbycurio.com/learn/highway-shield-interstate