jednokierunkowym

Jednokierunkowy is a Polish adjective meaning one-way or unidirectional. It describes objects, routes, processes, or situations that proceed in a single direction. The word is formed from jeden (one) and kierunek (direction) with the adjectival suffix -owy. It declines like other adjectives and changes form according to gender, number and case; for example: ruch jednokierunkowy (masculine singular), ulica jednokierunkowa (feminine singular), ruchy jednokierunkowe (plural).

In everyday use, the term is common in traffic and city planning. Ruch jednokierunkowy refers to traffic that travels in only one direction, while ulica jednokierunkowa denotes a street where vehicles are allowed to move in a single direction. Road signs often indicate ruch jednokierunkowy to inform drivers of the traffic pattern. Outside urban transport, jednokierunkowy can describe other unidirectional systems or flows, such as układ jednokierunkowy (unidirectional arrangement) or przepływ jednokierunkowy (unidirectional flow).

In grammar, the adjective agrees with the noun it modifies: ruch jednokierunkowy, ulica jednokierunkowa, pojazd porusza się w ruchu jednokierunkowym. The instrumental singular form is jednokierunkowym, as in pojazd porusza się w ruchu jednokierunkowym. The term is widely understood in Polish, and its usage spans everyday language, signage, and technical descriptions where a single directional constraint is stated or implied.