Prequels (Traffic Overlay)

Grid-based Traffic Overlays can use Prequels instead of road attributes for traffic intensity calculations.

Name	Prequel	Underlying data	Unit	Range	No data	Description
Buses	BUS	Traffic Prequel	vehicles/h	0 - max value	0	Amount of bus traffic in any given location.
Cars	CAR	Traffic Prequel	vehicles/h	0 - max value	0	Amount of car traffic in any given location.
Trucks	TRUCK	Traffic Prequel	vehicles/h	0 - max value	0	Amount of truck traffic in any given location.
Vans	VAN	Traffic Prequel	vehicles/h	0 - max value	0	Amount of van traffic in any given location.

Notes

• A Prequel with a single timeframe will mean that value applies to all hours of the day. A Prequel with multiple timeframes is assumed to have 24 timeframes, with each timeframe representing a single hour of the day.