Defra has published strategic noise map data that give a snapshot of the estimated noise from road and rail sources across England in 2021. The data was developed as part of implementing the Environmental Noise (England) Regulations 2006 (‘the regulations’).

This data will help transport authorities to better identify and prioritise relevant local action on noise. It will also be useful for planners, academics and others working to assess noise and its impacts.

Data indicating the level of noise according to the strategic noise mapping of road sources within areas with a population of at least 100,000 people (agglomerations) and along major traffic routes. Lden indicates a 24 hour annual average noise level with separate weightings for the evening and night periods. Noise levels are modeled on a 10m grid at a receptor height of 4m above ground, polygons are then produced by merging neighboring cells within the following noise classes: 75.0+ dB, 70.0-74.9 dB, 65.0-69.9 dB, 60.0-64.9 dB, 55.0-59.9 dB,

Areas which the Secretary of State considers to be urban (with a population greater than or equal to 100,000 people) where, under the Environmental Noise Directive (Round 2), Defra is required to undertake Strategic Noise Mapping. Attribution statement: © Crown Copyright

Data indicating the level of noise according to the strategic noise mapping of rail sources across England.

• The day-evening-night level (Lden) is a noise indicator for overall annoyance based upon annual average A-weighted long-term sound over 24 hours with a 5 dB(A) penalty for evening noise (19:00-23:00) and a 10 dB(A) penalty for night-time noise (23:00-07:00).
• The 16-hour equivalent continuous level (LAeq,16h) is a noise indicator which describes the annual average steady noise level over the 16-hour daytime period (07:00 to 23:00) which contains the same sound energy as the actual fluctuating sound across the same period.
• The day level (Lday) is a daytime noise indicator based upon annual average A-weighted long-term sound over the daytime period (07:00-19:00) which contains the same sound energy as the actual fluctuating sound across the same period.
• The evening level (Leve) is an evening noise indicator based upon annual average A-weighted long-term sound over the evening period (19:00-23:00) which contains the same sound energy as the actual fluctuating sound across the same period.
• The night level (Lnight) is a night-time noise indicator based upon annual average A-weighted long-term sound over the night period (23:00-07:00) which contains the same sound energy as the actual fluctuating sound across the same period.
• The 6-hour equivalent continuous level (LAeq,6h) is a noise indicator which describes the annual average steady noise level over the 6-hour period (24:00 to 06:00) which contains the same sound energy as the actual fluctuating sound across the same period.
• The 18-hour equivalent continuous level (LAeq,18h) is a noise indicator which describes the annual average steady noise level over the 18-hour period (06:00 to 24:00) which contains the same sound energy as the actual fluctuating sound across the same period.

Noise levels are modelled on a 10m grid at a receptor height of 4m above ground, with a lower threshold cutoff of 35dB for the Lnight and LAeq,6h metrics, and 40dB for all other metrics. Data is available for all railway sources and also those defined as "major" under the Regulations.

This data is a product of the strategic noise mapping analysis undertaken in 2022 to meet the requirements of the Environmental Noise (England) Regulations 2006 (as amended).

The data show the estimated number of people affected by noise from road traffic, railway and industrial sources, based on an annual average 24 hour period for the situation in 2011. The information arose from the strategic noise mapping undertaken to meet the requirements of Directive 2002/49/EC (the Environmental Noise Directive (END)) and the corresponding regulations.

The information is given for each agglomeration covered by the END and for the major road and railway sources outside agglomerations as defined in the END. Other notes:

• There is no requirement to map industrial sources outside agglomerations.

• Not all agglomerations have industrial sources covered by the END that cause population to be exposed to noise levels in the ranges shown

• The noise exposure ranges shown reflect the requirements of the END

• The END is not prescriptive over exactly what noise sources have to be included in the strategic noise mapping.

• For all agglomerations, the road noise mapping was based on Motorways and A roads only, using data compiled by the Department for Transport.

• For all agglomerations, the railway noise mapping was based on the standard passenger and freight network only.

• For industry, only those sites which met the definition of a Part A(1) activity as described in the Environmental Permitting (England and Wales) Regulations 2010 were included.

Data indicating the level of noise according to the strategic noise mapping of road sources within areas with a population of at least 100,000 people (agglomerations) and along major traffic routes. Lnight indicates night time annual average noise level results in dB, where night is defined as 2300 - 0700. Noise levels are modeled on a 10m grid at a receptor height of 4m above ground, polygons are then produced by merging neighboring cells within the following noise classes: 70.0+ dB, 65.0-69.9 dB, 60.0-64.9 dB, 55.0-59.9 dB, 50-54.9 dB,

Data indicating the level of noise according to the strategic noise mapping of road sources within areas with a population of at least 100,000 people (agglomerations) and along major traffic routes. LAeq,16h indicates the annual average noise levels for the 16-hour period between 0700 – 2300. Noise levels are modeled on a 10m grid at a receptor height of 4m above ground, polygons are then produced by merging neighboring cells within the following noise classes: 75.0+dB, 70.0-74.9dB, 65.0-69.9dB, 60.0-64.9dB, 55.0-59.9dB,

Data indicating the level of noise according to the strategic noise mapping of rail sources within areas with a population of at least 100,000 people (agglomerations) and along Network Rail and HS1 traffic routes. Lden indicates a 24 hour annual average noise level with separate weightings for the evening and night periods. Noise levels are modeled on a 10m grid at a receptor height of 4m above ground, polygons are then produced by merging neighboring cells within the following noise classes: 75.0+ dB, 70.0-74.9 dB, 65.0-69.9 dB, 60.0-64.9 dB, 55.0-59.9 dB, <54.9 dB This data is a product of the strategic noise mapping analysis undertaken in 2017 to meet the requirements of the Environmental Noise Directive (Directive 2002/49/EC) and the Environmental Noise (England) Regulations 2006 (as amended). Attribution statement:

This data is a product of the strategic noise mapping analysis undertaken by DAERA Northern Ireland in 2007 (Round 1) in 2012 (Round 2) and 2017 (Round 3) to meet the requirements of the EU Environmental Noise Directive (Directive 2002/49/EC) and Environmental Noise Regulations (Northern Ireland) 2006.

Data indicating the level of noise according to the strategic noise mapping of rail sources within areas with a population of at least 100,000 people (agglomerations) and along Network Rail and HS1 traffic routes. LAeq,16h indicates the annual average noise levels for the 16-hour period between 0700 – 2300. Noise levels are modeled on a 10m grid at a receptor height of 4m above ground, polygons are then produced by merging neighboring cells within the following noise classes: 75.0+dB, 70.0-74.9dB, 65.0-69.9dB, 60.0-64.9dB, 55.0-59.9dB,

Levels of Noise Pollution in Hampshire and the Isle of Wight Integrated Care System (ICS) during Nighttime and 24-Hour Periods Based on Data from Strategic Noise Mapping. An Interactive Map Application Recommended Citation: Tsimpida, D., & Tsakiridi, A. (2025). Levels of noise pollution in Hampshire and the Isle of Wight Integrated Care System (ICS) during nighttime and 24-hour periods based on data from strategic noise mapping: An interactive map application. License: CC BY – This license enables reusers to distribute, remix, adapt, and build upon the material in any medium or format, so long as attribution is given to the creator. Information about Geographic Location of Data Collection: England Related Projects: Tsimpida, D., Environmental Health and Wellbeing Dynamics: Mapping High-Exposure Neighbourhoods and Assessing Transportation Noise Pollution's Impact on Population Health. This project is funded by the Sustainability & Resilience Institute (SRI), University of Southampton. The views expressed are those of the author(s) and not necessarily those of SRI or the University of Southampton. Methodological Information: To quantify noise pollution, we used the new Noise Mapping Geographic Information Systems (GIS) datasets developed by Defra that calculate noise exposure levels and are openly available: Department for Environment, Food & Rural Affairs. Strategic noise mapping (2022) [Internet]. 2024. Available from: https://www.gov.uk/government/publications/strategic-noise-mapping-2022 For our analyses, we used both the day-evening-night level (Lden) and the night level (Lnight). The Lden level is a noise metric used to assess overall annoyance, calculated as the annual average A-weighted sound level over a 24-hour period. This measure includes a 5-decibel (dB(A)) penalty for evening noise (7 pm to 11 pm) and a 10 dB(A) penalty for nighttime noise (11 pm to 7 am). The Lnight is a nighttime noise indicator that reflects the annual average A-weighted sound level during the night period (11 pm to 7 am), representing the total sound energy equivalent to the fluctuating noise levels experienced throughout that period. _ Geospatial Analysis Information: All geospatial models in this study used Lower Super Output Areas (LSOAs) as the unit of analysis. In all analyses, we used the LSOA boundaries published by the Office for National Statistics as of March 21, 2021: Office for National Statistics. Census 2021 geographies [Internet]. 2021. Available from: https://www.ons.gov.uk/methodology/geography/ukgeographies/censusgeographies/census2021geographies _ Integrated Care Board Boundaries: Digital vector boundaries for Integrated Care Boards in England were those published by the Office for National Statistics: Integrated Care Boards (April 2023) EN BGC [Internet]. 2023. Available from: https://www.data.gov.uk/dataset/d6bcd7d1-0143-4366-9622-62a99b362a5c/integrated-care-boards-april-2023-en-bgc This version of the dataset, https://doi.org/10.5258/soton/d3377v2, was updated on 2015/02/17. The previous version is available at https://doi.org/10.5258/soton/d3377v1

Data indicating the level of noise according to the strategic noise mapping of rail sources within areas with a population of at least 100,000 people (agglomerations) and along Network Rail and HS1 traffic routes. Lnight indicates night time annual average noise level results in dB, where night is defined as 2300 - 0700. Noise levels are modeled on a 10m grid at a receptor height of 4m above ground, polygons are then produced by merging neighboring cells within the following noise classes: 70.0+ dB, 65.0-69.9 dB, 60.0-64.9 dB, 55.0-59.9 dB, 50-54.9 dB,

Data indicating the level of noise according to the strategic noise mapping of rail sources within areas with a population of at least 100,000 people (agglomerations) and along Network Rail and HS1 traffic routes. Lnight indicates night time annual average noise level results in dB, where night is defined as 2300 - 0700. Noise levels are modeled on a 10m grid at a receptor height of 4m above ground, polygons are then produced by merging neighboring cells within the following noise classes: 70.0+ dB, 65.0-69.9 dB, 60.0-64.9 dB, 55.0-59.9 dB, 50-54.9 dB, <49.9 dB This data is a product of the strategic noise mapping analysis undertaken in 2012 to meet the requirements of the Environmental Noise Directive (Directive 2002/49/EC) and the Environmental Noise (England) Regulations 2006 (as amended). Attribution statement:

Noise contour maps show the noise levels in the city with lines of the same sound level, according to the type of source and the time period. A Strategic Noise Map (SNM) is a set of maps that serve to globally assess the population's exposure to noise produced by different noise sources in a given area, and to serve as the basis for the development of action plans. They are used as a management tool to fight noise pollution and are developed every 5 years. This information can be graphically consulted in the Environmental data maps. The other available datasets from Strategic Noise Map can also be consulted. For further details about the Strategic Noise Map, check the FAQ of Environmental data maps.

Exposed population data determine the percentages of the population exposed to the different noise ranges, according to the type of source and the time period. The data is available at city, district and neighbourhood level. A Strategic Noise Map (SNM) is a set of maps that serve to globally assess the population's exposure to noise produced by different noise sources in a given area, and to serve as the basis for the development of action plans. They are used as a management tool to fight noise pollution and are developed every 5 years. This information can be graphically consulted in the Environmental data maps. The other available datasets from Strategic Noise Map can also be consulted. For further details about the Strategic Noise Map, check the FAQ of Environmental data maps.

Dataset Name: END Noise Data Round 2 - 2012Data Owner: DAERAContact: Air and Environmental Quality Unit amy.holmes@daera-ni.gov.ukSource URL: https://gis.daera-ni.gov.uk/arcgis/apps/MapSeries/index.html?appid=0bf4f42018224494b071b5dcd0ce4e56Uploaded to SPACE Hub: 12/06/23Update Frequency: Every 5 yearsScale Threshold: N/AProjection : Irish GridFormat: Esri Feature Layer (Hosted) Vector PolygonNotes: This data is a product of the strategic noise mapping analysis undertaken by DAERA Northern Ireland in 2012 to meet the requirements of the EU Environmental Noise Directive (Directive 2002/49/EC) and Environmental Noise Regulations (Northern Ireland) 2006. NOISE SOURCESAGGLOMERATION ROAD (agg-road) Data indicating the level of noise according to the strategic noise mapping of major road sources within areas with a population of at least 100,000 people (Belfast Metropolitan Urban Area agglomeration).AGGLOMERATION RAIL (agg_rail) Data indicating the level of noise according to the strategic noise mapping of major rail sources withinINDUSTRY (agg_ind) Data indicating the level of noise according to the strategic noise mapping of all Part A industrial activities as defined in Schedule 1 of the Pollution Prevention and Control Regulations (Northern Ireland) 2003 (as amended) and all ports within the Belfast Metropolitan Urban Area (BMUA) agglomeration.AGGLOMERATION AIRPORT (BCA) Data indicating the level of noise according to the strategic noise mapping of airport sources within areas with a population of at least 100,000 people (Belfast Metropolitan Urban Area agglomeration). In Northern Ireland, the agglomeration airport is George Best Belfast City Airport.CONSOLIDATED (con) Data indicating the level of noise according to the strategic noise mapping of all noise sources within the Belfast Metropolitan Urban Area (BMUA) agglomeration.MAJOR AIRPORT (BIA) Data indicating the level of noise according to the strategic noise mapping of airport sources withmore than 50,000 air traffic movements per year. In Northern Ireland, the major airport isBelfast International Airport (BIA).MAJOR RAIL (mrail) Data indicating the level of noise according to the strategic noise mapping along NI Translink routes with more than 30,000 train passages per year.MAJOR ROAD (mroad) Data indicating the level of noise according to the strategic noise mapping along major traffic routes withmore than 3,000,000 vehicle passages per year. NOISE INDICATORS Lden (lden) The LAeq over the period 0000-2400, but with the evening values (1900-2300) weighted by the addition of 5 dB(A), and the night values (2300-0700) weighted by the addition of 10dB(A)Lday (lday) The LAeq over the period 0700-1900, local time (for strategic noise mapping this is an annual average)Levening (leve) The LAeq over the period 1900-2300, local time (for strategic noise mapping this is an annual average)Lnight (lngt) The LAeq over the period 2300-0700, local time (for strategic noise mapping this is an annual average)LAeq,6h (l6h) The LAeq over the period 2400-0600, local time (for strategic noise mapping this is an annual average)LAeq,16h (l16h) The LAeq over the period 0700-2300, local time (for strategic noise mapping this is an annual average)LAeq,18h (l18h) The LAeq over the period 0600-2400, local time (for strategic noise mapping this is an annual average)-------------------------------------------------------------------------------------------For informations on the noise data and modelling methods used, please refer to the DAERA Northern Ireland website:https://www.daera-ni.gov.uk/services/noise-mapsContact details:Amy Holmes (amy.holmes@daera-ni.gov.uk)Air and Environmental Quality Unit - Regulatory and Natural Resources Policy DivisionDepartment of Agriculture, Environment and Rural Affairs (DAERA NI)

Installations of the environmental noise monitoring network with the aim of knowing the noise levels of the environment in the city of Barcelona.

This method returns Crystal Roof’s traffic noise map overlays. These overlays are taken directly from our main Traffic Noise map.

The overlays are circular PNG images, available in 1,000, 1,500, or 2,000-meter radii.

You can request overlays for road traffic noise, rail traffic noise, or a combined noise level — controlled by the variant parameter.

Integration examples

• Google Maps integration example
• Leaflet integration example

Noise maps by facade show the noise levels on building facades, according to the type of source and the time period. A Strategic Noise Map (SNM) is a set of maps that serve to globally assess the population's exposure to noise produced by different noise sources in a given area, and to serve as the basis for the development of action plans. They are used as a management tool to fight noise pollution and are developed every 5 years. This information can be graphically consulted in the Environmental data maps. The other available datasets from Strategic Noise Map can also be consulted. For further details about the Strategic Noise Map, check the FAQ of Environmental data maps.

This dataset is part of the "Sound Levels Monitoring Project in London (UK)" collection - a long-term noise monitoring campaign carried out by UCL Institute for Environmental Design and Engineering. For more details, please refer to the collection details: https://doi.org/10.5522/04/c.5307266Location: St Pancras New ChurchInterval: 15.02.2021 - 22.02.2021Position: 51°31'37.0"N 0°07'48.3"W (51.526931, -0.130089)Instrument: Rion NL-52Reference filename:New_Church_Front_Sign_2021_02_15_0800-2021_02_22_0700_R_LZeq