Building attributes (Traffic Noise Overlay)

Roads have defined intensity values for each traffic type. The Traffic Noise Overlay uses these values to calculate decibel emissions.

Icon	Attribute	Unit	Range	Description

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Icon	Attribute	Unit	Range	Description	Default value
	NUM_BUSES	vehicles/h	0 to 2147483647	The amount of bus traffic on this road.	0

The value can either by a single value, or an Attribute array of values. As a single value, this reflects the amount of vehicles per hour at any point of the day. As an Attribute array, it's assumed to be an array of 24 values, each value corresponding to each hour of the day.

How-to's

• How to add and remove an Attribute

See also

• Traffic visualization
• Hours (Traffic Noise Overlay)
• Buses per hour (Function Value)
• Traffic noise formula (Traffic Noise Overlay)
• Buses prequel (Traffic Noise Overlay)

API Endpoints

• Api session event editor building set function value
• Api session event editor functionoverride set function value

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Traffic Noise Overlay

Model attributes

V0 • Emission start • Emission mult • Hours • Background db • Cars active • Vans active • Trucks active • Buses active

Traffic features

Num cars • Num vans • Num trucks • Num buses • Traffic speed

Prequels

Cars • Vans • Trucks • Buses

Result types

Noise db • Emission

NUM_CARS vehicles/h 0 to 2147483647 The amount of car traffic on this road. 0 NUM_TRUCKS vehicles/h 0 to 2147483647 The amount of truck traffic on this road. 0

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Icon	Attribute	Unit	Range	Description	Default value
	NUM_VANS	vehicles/h	0 to 2147483647	The amount of van traffic on this road.	0

The value can either by a single value, or an Attribute array of values. As a single value, this reflects the amount of vehicles per hour at any point of the day. As an Attribute array, it's assumed to be an array of 24 values, each value corresponding to each hour of the day.

How-to's

• How to add and remove an Attribute

See also

• Traffic visualization
• Hours (Traffic Noise Overlay)
• Vans per hour (Function Value)
• Traffic noise formula (Traffic Noise Overlay)
• Vans prequel (Traffic Noise Overlay)

API Endpoints

• Api session event editor building set function value
• Api session event editor functionoverride set function value

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Traffic Noise Overlay

Model attributes

V0 • Emission start • Emission mult • Hours • Background db • Cars active • Vans active • Trucks active • Buses active

Traffic features

Num cars • Num vans • Num trucks • Num buses • Traffic speed

Prequels

Cars • Vans • Trucks • Buses

Result types

Noise db • Emission

TRAFFIC_NOISE_SIGMA dB(A) Difference in noise intensity of vehicles at their reference speed. Effectively a flat modifier in noise. TRAFFIC_NOISE_TAU dB(A) Difference in noise intensity of vehicles for every order of magnitude difference with their reference speed. Effectively a speed-dependent modifier in noise. 0 TRAFFIC_SPEED km/h How fast vehicles move on this building.