Railway Emission from Traffic

Compute railway emission noise map from vehicule, traffic table AND section table.

Overview

➡️ Compute Rail Emission Noise Map from Day, Evening and Night traffic flow rate and speed estimates (specific format, see input details). ✅ The output table is called LW_RAILWAY

Arguments

Mandatory inputs

tableRailwayTrack — RailWay Track table name

Name of the Railway Track table. This function recognize the following columns (* mandatory):

  • IDSECTION* : A section identifier (PRIMARY KEY) (INTEGER)

  • NTRACK* : Number of tracks (INTEGER)

  • TRACKSPD* : Maximum speed on the section (in km/h) (DOUBLE)

  • TRANSFER : Track transfer function identifier, e.g. “SNCF5” or “EU7” (VARCHAR)

  • ROUGHNESS : Rail roughness identifier, e.g. “SNCF1” or “EU3” (VARCHAR)

  • IMPACT : Impact noise coefficient identifier, e.g. “SNCF1” or “EU1”, empty for none (VARCHAR)

  • CURVATURE : Listed code describing the curvature of the section (INTEGER)

  • BRIDGE : Bridge transfer function identifier, e.g. “EU3”, empty for none (VARCHAR)

  • TRACKSPD : Commercial speed on the section (in km/h) (DOUBLE)

  • ISTUNNEL : Indicates whether the section is a tunnel or not (0 = no / 1 = yes) (BOOLEAN)

Type: String

tableRailwayTraffic — Railway traffic table name

Name of the Rail traffic table. This function recognize the following columns (* mandatory):

  • IDTRAFFIC* : A traffic identifier (PRIMARY KEY) (INTEGER)

  • IDSECTION* : A section identifier, refering to RAIL_SECTIONS table (INTEGER)

  • TRAINTYPE* : Type of vehicle, listed in the Rail_Train_SNCF_2021 file (mainly for french SNCF) (STRING)

  • TRAINSPD* : Maximum Train speed (in km/h) (DOUBLE)

  • TDAY, TEVENING and TNIGHT : Hourly average train count (6-18h)(18-22h)(22-6h) (INTEGER)

Type: String

Optional inputs

railwayEmissionDataFile — Railway emission data file

URL of the railway emission data file in CNOSSOS format (json). By default, the file provided with NoiseModelling is used.

Type: String

trainSetDataFile — Railway train set data file

URL of the railway train set data file in CNOSSOS format (json). By default, the file provided with NoiseModelling is used.

Type: String

vehicleDataFile — Railway vehicle data file

URL of the railway vehicle data file in CNOSSOS format (json). By default, the file provided with NoiseModelling is used.

Type: String

Output

result — Result output string

This type of result does not allow the blocks to be linked together.

Type: String