Prequels (Travel Distance Overlay)

Prequel overlays can be linked to the Travel Distance Overlay to initiate particular parts of the model with more accuracy and detail.

Name	Prequel	Underlying data	Unit	Description	Range	No data
Blocking	BLOCKING	Travel Distance Prequel		Used for identifying whether a grid cell is blocked for traffic.	- infinity to infinity	Clamped to range
Destination	DESTINATION	Travel Distance Prequel		Used for identifying whether a grid cell is a destination.	- infinity to infinity	Clamped to range
Traversable	TRAVERSABLE	Travel Distance Prequel		Used for identifying whether a grid cell is traversable.	- infinity to infinity	Clamped to range

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Travel Distance Overlay

Model attributes

Max travel distance • Road distance • Route pedestrians • Route bicycles • Route cars • Route trucks • Route trams • Route trains • Route ships • Blocking threshold • Destination threshold • Traversable threshold

Travel features

Destination area • Blocked road

Prequels

Destination • Traversable • Blocking

Result types

Distance • Base types