Enter the traffic volume, distance from the roadway, and the average speed of traffic into the calculator to determine the noise level in decibels (dB).
Hud Noise Level Formula
The following formula is used to calculate the noise level:
NL = 70 + 10 * log10(TV) + 20 * log10(S / 70) - 30 * log10(D / 50)
Variables:
- NL is the noise level (dB)
- TV is the traffic volume (vehicles per hour)
- S is the average speed of traffic (mph)
- D is the distance from the roadway (feet)
To calculate the noise level, use the formula above, where 70 represents the assumed ambient noise level in dB, and the logarithmic terms account for the increase in noise with traffic volume and speed, and the decrease in noise with distance from the roadway.
What is Hud Noise Level?
The Hud noise level is a measure of the sound pressure level created by vehicular traffic, typically used in urban planning and environmental studies. It is expressed in decibels (dB), a logarithmic unit that quantifies the intensity of sound. This measurement helps in assessing the impact of road traffic noise on nearby residential and commercial areas, and is crucial for developing noise mitigation strategies.
How to Calculate Hud Noise Level?
The following steps outline how to calculate the Hud Noise Level:
- First, determine the traffic volume (TV) in vehicles per hour.
- Next, determine the distance from the roadway (D) in feet.
- Then, determine the average speed of traffic (S) in miles per hour (mph).
- Use the formula provided above to calculate the noise level (NL) in decibels (dB).
- After inserting the variables and calculating the result, check your answer with the calculator above.
Example Problem:
Use the following variables as an example problem to test your knowledge.
Traffic Volume (TV) = 1500 vehicles per hour
Distance from Roadway (D) = 100 feet
Average Speed of Traffic (S) = 35 mph
