E04

E04 is an alphanumeric designation used in several domains, most notably as a European route number within the International E-road network. In that context, E04 designates a north–south corridor that traverses parts of Sweden and extends toward the Finnish border, connecting the Baltic region with northern Europe. The route is defined through cooperation between the United Nations Economic Commission for Europe (UNECE) and national transport authorities, and it is signposted with the E-number alongside national road identifiers. Traffic along E04 supports freight and passenger movement and links various urban and regional centers. Changes to the route are periodically reviewed as road networks evolve.

Beyond highways, E04 appears as a model or product identifier in various catalogs and industries. It may denote a specific variant, version, or batch designation assigned by manufacturers to distinguish items within a product family. In software, electronics, or logistics systems, E04 can function as an internal code used to classify or track components, configurations, or processes. Because the same alphanumeric sequence can be adopted independently by different organizations, the exact meaning of E04 depends on the domain and issuer.

In reference works and databases, E04 is often listed among other alphanumeric codes, reflecting its role as a cross-domain identifier. Readers seeking precise meaning should consult domain‑specific sources or disambiguation pages to determine which E04 is being referenced in a given context.