urbanObject

Urban areas where travel speed decreases and follows time-dependent patterns — primarily used to model major cities.

{

"key": <string>,

"conurbation": <string>,

}

key string: Identifier used for diagnostics and maintenance.
zone zone: The circular region comprising this urban zone.
innerRadius distance: Extent of the central zone where effects are constant; beyond it, effects taper toward the edge.
speedFactor real: How much travel speeds reduce relative to surrounding regions (typically 0.3–0.7); scaled by drive time via the urban time factor.
conurbation string: Links related urban areas into a conurbation group (affects trunk-routing assumptions).

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