R31

R31 is a designation used in multiple contexts and does not point to a single entity. The meaning of R31 varies by country, industry, and context, and it is often applied to routes, product codes, or chassis designations. Because of this, R31 requires contextual clarification to identify its specific reference.

In road networks, an R followed by a number commonly denotes a regional or rural route. The R31 designation may refer to different roads in different countries, each with its own start and end points, length, and management. These are documented in national or subnational transport records and maps.

In automotive contexts, R31 is widely recognized as a chassis code for a generation of the Nissan Skyline produced in the 1980s. The designation identifies a model lineage rather than a single vehicle and is used in marketing, maintenance documentation, and parts catalogs.

Beyond transportation and vehicles, R31 appears as a general product code or catalog number in various industries, including electronics, manufacturing, and research. The specific item associated with R31 depends on the issuing organization and context.