The Golden Arches became McDonald's dominant standalone symbol after the company's 1968 logo redesign.
The arches had originally been architectural features incorporated into restaurant buildings. Over time, the company transformed them from physical design elements into a compact visual mark that could identify McDonald's without showing the full wordmark.
The 1968 redesign linked the arches into the familiar letter-M shape. This made the symbol particularly useful on roadside signs, packaging, uniforms, advertising, and restaurant façades, where a simple high-contrast mark could be recognized quickly.
The Golden Arches should not be confused with the Speedee character, which belonged to an earlier branding era. The arches also continued to appear in different logo arrangements and color treatments as McDonald's visual identity evolved.