A77

A77 is a designation used in multiple, unrelated contexts, most commonly as a road or route identifier in transportation networks and as a product model name in technology. The exact meaning of A77 depends on the domain and jurisdiction.

In transportation, A77 is applied to several routes within different road systems. Each instance designates a specific corridor within its national or regional network, with endpoints, length, and classification defined by local authorities. The use of A-numbers reflects a broader practice of employing simple alphanumeric codes to label routes.

In consumer electronics, A77 is notably associated with Sony’s Alpha 77, a digital single-lens reflex camera marketed as the SLT-A77. Introduced in the early 2010s, it was part of Sony’s Alpha line and used a translucent mirror design, supporting interchangeable lenses and improved autofocus for its time.

Other uses of the A77 designation appear in product codes, model numbers, or project identifiers across various industries. Because the same designation can refer to different, unrelated items, context is essential to determine the intended meaning.