4lane

4lane is a term that may refer to different things, depending on context, and there is no single, universally recognized meaning. In transportation planning and civil engineering, the term is most commonly used to describe a four-lane roadway: a street or highway that carries two lanes of traffic in each direction, typically separated by a median or turning lane. Four-lane configurations are chosen for capacity, safety, and access management reasons, and they can range from rural to urban arterials. Design features vary, but common elements include standard lane widths (often around 3.0 to 3.75 meters in many jurisdictions), shoulders, and cross-section provisions for turning movements and pedestrian access.

In branding and product naming, 4lane or 4LANE has been adopted as a stylized name by various, unrelated entities. Because the term lacks a unique, globally recognized referent, identifying a specific company or project requires additional context, such as location, industry, or a formal entity name.

Origin and usage: The phrase is descriptive rather than proprietary in everyday traffic engineering, and it appears in road classifications, construction plans, and transportation guidelines. Related terms include four-lane road, multi-lane highway, and lane management. If a particular reference to "4lane" is encountered, consulting the relevant source or disambiguation pages is recommended to determine which entity or infrastructure is being described.