E43

E43 is an alphanumeric designation used in multiple systems to identify distinct items, depending on the context. The most commonly referenced use is as a European route in the international E-road network, where the E43 label marks a cross-border road intended to facilitate long-distance travel and trade. Like other E-roads, its exact alignment and endpoints are subject to updates by intergovernmental agreements and national transport authorities, and signage follows both the E-road network and local conventions.

In the European road network, E43 is described as a north–south route that traverses central Europe. It typically connects a sequence of urban and regional centers and intersects with other E-roads and national highways, enabling broader connectivity across member states. The route's precise path can change over time as networks are revised, and travelers are advised to consult current maps or official sources for the latest alignment.

Beyond roads, E43 can appear in other domains as a code or model number. Some organizations may reuse the E43 designation for specific services, products, or project identifiers within a regional context. Because alphanumeric codes such as E43 are widely reused across industries, the exact meaning is highly context-dependent and should be verified against domain-specific references.

See also: European route network, Alphanumeric route designations, Transportation infrastructure classification.