Noise tau (Function Value)

Function value	Attribute	Unit	Per category	Range	Description
Noise tau	TRAFFIC_NOISE_TAU	dB(A)	No	-1.7976931348623157E308 to 1.7976931348623157E308	Difference in noise intensity of vehicles for every order of magnitude difference with their reference speed. Effectively a speed-dependent modifier in noise.

Used for

• Traffic Noise (Indicator)
• Traffic Noise Overlay

Model-specific articles

• Traffic noise tau (Traffic Noise Overlay)