How does it work ?
Key :
What is "Worksite News" ?
Worksite News is a service proposed by Uby for providing local governments and residents transparent and objective information about the noise generated by worksites.
What information is available ?
The Worksite information service provides the following information :
The website displays low noise but it is very loud in my home ?
It is very complicated to have an objective measure of the perception of a nuisance as it is linked to many factors (distance from the source of the sound, weather conditions, space configuration, sound frequency, duration…). Measurements in decibels only give a partial representation of the perceived reality. It is currently the most accurate that can be done. The Worksite Information service uses state of the art sensors that provide universally accepted measurements for noise.
The two most frequent explanations for a discrepancy between perception and measure are :
What do the colours of the ears mean in the forecast ?
What are decibels dB(A) ?
The intensity of sound is expressed in decibels on a scale from 0dB(A), threshold of human audition, to ca. 320dB(A), highest limit for noise in our environment. A decibel (dB) is a non-dimentional unit used to express the ratio of one value of a power quantity to another, on a logarithmic scale. It is used in telecommunications, electronics and acoustics. In environmental acoustics, the sound level is expressed in decibels. Sound measures are corrected in a particular frequency dB(A) so as to take into account human perception.
What do the coloured shapes represent in the 360° view ?
The 360° display proposed by Bruitparif is for visualising the source of noise. The shapes (hexagons) show the direction from which the sound originates.
What do the pink and blue curves represent ?
If your Widget allows the display of noise curves, in the graph there are 3 curves:
I cannot find an answer to my question in these FAQ
If your question concerns the Worksite Information service, you can send an e-mail to contact@comin-city.com Your feedback helps us improve the service.
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Low noise : under 55dB Everyday life equivalent : a park in a city |
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Moderate noise : between 55dB and 70dB Everyday life equivalent : ambient noise in an urban setting |
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Loud noise : between 70dB and 85dB Everyday life equivalent : busy city traffic (e.g: Euston Road or Marble Arch in London, the Manchester Ringroad) |
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Very loud noise : between 85dB and 95dB Everyday life equivalent : loud motorcycle, road sweeper or garbage collection lorry |
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Distressing noise : between 95dB and 105dB Everyday life equivalent: vehicle horn, siren |
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Dangerous noise : above 105dB Protection necessary above 120dB (threshold of pain) Everyday life equivalent: rock concert (near the stage), night club |
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Site closed |
What is "Worksite News" ?
Worksite News is a service proposed by Uby for providing local governments and residents transparent and objective information about the noise generated by worksites.
What information is available ?
The Worksite information service provides the following information :
- Forecasts on the level of noise for the next 2 weeks
- Operations in progress
- Real-time measures of sensors located within the worksite
- Real-time information in case of an incident
- Log of the previous 7 days of noise data
- General information about the site
- Contact information of the liaison officer
The website displays low noise but it is very loud in my home ?
It is very complicated to have an objective measure of the perception of a nuisance as it is linked to many factors (distance from the source of the sound, weather conditions, space configuration, sound frequency, duration…). Measurements in decibels only give a partial representation of the perceived reality. It is currently the most accurate that can be done. The Worksite Information service uses state of the art sensors that provide universally accepted measurements for noise.
The two most frequent explanations for a discrepancy between perception and measure are :
- A different distance and obstacles between the source of the sound and the sensor and between the source of the sound and the person hearing the sound. If the person is next to the source of the sound (a jackhammer for example) and the sensor is placed on the other side of the site and behind a hoarding, noise perceived will be much louder than the measure recorded by the sensor.
- Frequency and duration of the noise: measures in decibels are recorded with an average accross the entire sound spectrum and don't take into account duration or frequency of the sound. Duration and frequency are particularly important in perception of noise and the nuisance it can cause.
What do the colours of the ears mean in the forecast ?
| Icon | Légend (1) | Worksite referential (2) | White | Worksite closed | No noise coming out of the worksite |
| Green | Low noise | The worksite produces less noise or in similar volume to the ambient sound of the city. No jack-hammer or any loud sounds. SIMILAR: public park in the city |
| Blue | Moderate noise | The worksite produces noise in comparable volume or in slight excess to the ambient sound in
the city. Some rare occurrences of jack-hammer and/or some loud sounds. SIMILAR: ambient sound in an urban setting. |
| Orange | Loud noise | The worksite produces noise in notable excess to the ambient sound of the city. Repeated use of jack-hammer and/or other loud noises. SIMILAR: dense road traffic. |
| Red | Critical noise | Jack-hammer and/or loud noise more than 6 hours/day. SIMILAR: loud motorcycle or garbage collection lorry. |
What are decibels dB(A) ?
The intensity of sound is expressed in decibels on a scale from 0dB(A), threshold of human audition, to ca. 320dB(A), highest limit for noise in our environment. A decibel (dB) is a non-dimentional unit used to express the ratio of one value of a power quantity to another, on a logarithmic scale. It is used in telecommunications, electronics and acoustics. In environmental acoustics, the sound level is expressed in decibels. Sound measures are corrected in a particular frequency dB(A) so as to take into account human perception.
What do the coloured shapes represent in the 360° view ?
The 360° display proposed by Bruitparif is for visualising the source of noise. The shapes (hexagons) show the direction from which the sound originates.
- The darker the hexagon, the more sound at a given moment originates from the direction of that hexagon.
- The more the shapes are coloured red, the louder the sound is (the more they are coloured blue, the lower the sound).
What do the pink and blue curves represent ?
If your Widget allows the display of noise curves, in the graph there are 3 curves:
- Values on the blue curve correspond to average measures on a 10 minute period.
- Values on the pink curves below and above display minimum and maximum values measured during a 30 second intervals within a 10 minute period.
I cannot find an answer to my question in these FAQ
If your question concerns the Worksite Information service, you can send an e-mail to contact@comin-city.com Your feedback helps us improve the service.