Theme Info

Traffic noise pollution problem is increasingly emerging with the rapid development of urban traffic.Researchers have paid close attention to the health effects of traffic noise. Traffic noise can have various adverse health effects,and most of them are extra-auditory effects. The main aspects include that traffic noise can affect the cardiovascular system,which is verified by the evidence that exposure to traffic noise significantly increases the risk for cardiovascular diseases,such as high blood pressure,myocardial infarction,coronary heart disease,and so on. In addition,traffic noise can induce adverse effects on nervous system,leading to the increasing levels of anxiety,noise annoyance,and occurrence of insomnia. Furthermore,traffic noise is significantly associated with adverse pregnant outcomes,and can affect the endocrine system and digestive system[1].

There are many models of traffic noise,such as TRANEX(Traffic Noise Exposure Model),CoRTN(Calculation of Road Traffic Noise),FHWA and so on.Different models apply to different environments and conditions.For example,the FHWA is suitable for highway with stable and smooth speed,and traffic in tunnels is excluded from TRANEX.Most models are a combination of basic noise level and correction,here are the brief of several models:


  • RLS90
  • The RLS90 is an improved version of the RLS81 released by the German ministry of transport,including noise source and propagation part. The noise source part is not based on the noise produced by individual vehicles, but is established through traffic flow and other road information.The model requires road information such as vehicle flow, proportion of large vehicles, width, slope, material, etc.

  • CoRTN (Calculation of Road Traffic Noise)
  • The result of CoRTN is a combination of basic noise level and correction.The corrections of CoRTN inclode traffic speed and the percentage of heavy vehicles,the gradient of a road section,road surface,the slant distance between the road (source) and receptor,shielding (i.e. barriers) between a road (source) and receptor,ground cover attenuation,the angle of view of the road and reflections from buildings on the opposite side of the facade[2].

    Fig.1. The Brief of CoRTN

  • TRANEX(Traffic Noise Exposure Model)
  • TRANEX is a modification of CoRTN,the principle of TRANEX is similar to CoRTN,here are the workflow of TRANEX:

    Fig.2. The Workflow of TRANEX[2]


References:

[1] Jing Huang,Bin Guo,Xinbiao Guo.Research progress in health impact of traffic noise[J].Journal of Peking University(Health Sciences),2015,47(3):555-558.

[2] John Gulliver,David Morley,Danielle Vienneau,Federico Fabbri,Margaret Bell,Paul Goodman,Sean Beevers,David Dajnak,Frank J Kelly,Daniela Fecht. Development of an open-source road traffic noise model for exposure assessment[J]. Environmental Modelling and Software,2015,74.

RLS90

  • RLS90
  • The RLS90 is an improved version of the RLS81 released by the German ministry of transport,including noise source and propagation part. The noise source part is not based on the noise produced by individual vehicles, but is established through traffic flow and other road information.The model requires road information such as vehicle flow, proportion of large vehicles, width, slope, material, etc.


    Applications

    • Web RLS90

    Web RLS90

    CoRTN

  • CoRTN (Calculation of Road Traffic Noise)
  • The result of CoRTN is a combination of basic noise level and correction.The corrections of CoRTN inclode traffic speed and the percentage of heavy vehicles,the gradient of a road section,road surface,the slant distance between the road (source) and receptor,shielding (i.e. barriers) between a road (source) and receptor,ground cover attenuation,the angle of view of the road and reflections from buildings on the opposite side of the facade.

    Fig. The Brief of CoRTN


    Applications

    • Web CoRTN

    Web CoRTN

    TRANEX

  • TRANEX(Traffic Noise Exposure Model)
  • TRANEX is a modification of CoRTN,the principle of TRANEX is similar to CoRTN,here are the workflow of TRANEX:

    Fig. The Workflow of TRANEX


    Applications

    • Web TRANEX

    Web TRANEX

    Others

    • Others Model

    Others Model

    Shapefiles

    The shapefile format is a popular geospatial vector data format for geographic information system (GIS) software. It is developed and regulated by Esri as a (mostly) open specification for data interoperability among Esri and other GIS software products.[1]The shapefile format can spatially describe vector features: points, lines, and polygons, representing, for example, water wells, rivers, and lakes. Each item usually has attributes that describe it, such as name or temperature.[2]

    The shapefile format is a digital vector storage format for storing geometric location and associated attribute information. This format lacks the capacity to store topological information. The shapefile format was introduced with ArcView GIS version 2 in the early 1990s. It is now possible to read and write geographical datasets using the shapefile format with a wide variety of software.[2]


    Demo Data

    • Shapefiles of Road Center Line

    Shapefiles of Road Center Line

    • Shapefiles of Building

    Shapefiles of Building

    • Shapefiles of Barrier

    Shapefiles of Barrier


    References:

    [1] ESRI (July 1998). "ESRI Shapefile Technical Description" (PDF). Retrieved 2007-07-04.

    [2] Shapefile.[G/OL].Wikipedia,2019-2-24(2019-3-10).https://en.wikipedia.org/wiki/Shapefile

    Raster

    The raster format is a popular digital raster graphic data format for geographic information system (GIS) software,including GeoTIFF,Grid,etc.

    GeoTIFF is a public domain metadata standard which allows georeferencing information to be embedded within a TIFF file. The potential additional information includes map projection, coordinate systems, ellipsoids, datums, and everything else necessary to establish the exact spatial reference for the file. The GeoTIFF format is fully compliant with TIFF 6.0, so software incapable of reading and interpreting the specialized metadata will still be able to open a GeoTIFF format file.[1][2]


    Demo Data

    • Raster Files of Road Center Line

    Raster Files of Road Center Line

    • Raster Files of Building

    Raster Files of Building

    • Raster Files of Barrier

    Raster Files of Barrier


    References:

    [1] Sk. Sazid Mahammad, R. Ramakrishnan, GeoTIFF - A standard image file format for GIS applications. Retrieved on 2017-02-01.

    [2] GeoTIFF.[G/OL].Wikipedia,2019-1-11(2019-3-10).https://en.wikipedia.org/wiki/GeoTIFF

    Others

    • Others Files of Road Center Line

    Others Files of Road Center Line

    • Others Files of Building

    Others Files of Building

    • Others Files of Barrier

    Others Files of Barrier

    Applications

    • Web RLS90

    Web RLS90

    • Web CoRTN

    Web CoRTN

    • Web TRANEX

    Web TRANEX

    • Others Model1

    Others Model1

    • Others Model2

    Others Model2