Flow 2 Noisy Vehicles

From Road traffic flows to noisy individual vehicles

Overview

Calculates individual vehicle position and noise level based on average traffic flows. A first output table is called : SOURCES_GEOM which is needed to compute the Noise Attenuation Matrixand contain : - IDSOURCE : an identifier (INTEGER, PRIMARY KEY). - ROAD_ID : id link to the road segment (INTEGER). - THE_GEOM : the 3D geometry of the sources (POINT). The output table is called : SOURCES_EMISSION and contain : - PK : an identifier (INTEGER, PRIMARY KEY). - IDSOURCE : link to the source point (INTEGER). - PERIOD : The TIMESTAMP iteration (VARCHAR).- HZ63, HZ125, HZ250, HZ500, HZ1000,HZ2000, HZ4000, HZ8000 : 8 columns giving the instantaneous emission sound level for each octave band (FLOAT).

Arguments

Mandatory inputs

method — Selected Method

Two methods are available : - PROBA : Probabilistic representation of vehicle appearances for each time step (quicker, but sacrifices temporal coherence) Aumond, P., Jacquesson, L., & Can, A. (2018). Probabilistic modeling framework for multisource sound mapping. Applied Acoustics, 139, 34-43. . - TNP : Simplified vehicle movements (slower, but maintaining temporal coherence) De Coensel, B.; Brown, A.L.; Tomerini, D. A road traffic noise pattern simulation model that includes distributions of vehicle sound power levels. Appl. Acoust. 2016, 111, 170–178. .

Type: String

Allowed values: PROBA, TNP

tableRoads — Roads table name

Name of the Roads table. The table shall contain : - PK : an identifier. It shall be a primary key (INTEGER, PRIMARY KEY) - LV_D : Hourly average light and heavy vehicle count (DOUBLE) - HGV_D : Hourly average heavy vehicle count (DOUBLE) - LV_SPD_D : Hourly average light vehicle speed (DOUBLE) - HGV_SPD_D : Hourly average heavy vehicle speed (DOUBLE) - PVMT : CNOSSOS road pavement identifier (ex: NL05) (VARCHAR) This table can be generated from the WPS Block ‘Import_OSM’. .

Type: String

Optional inputs

duration — duration in sec.

Number of seconds to compute (INTEGER).

Type: Integer

Default: 60

gridStep

Distance between location of vehicle along the network in meters.

Type: Integer

Default: 10

timestep

Number of iterations. Timestep in sec.

Type: Integer

Default: 1

Output

result — Generated table name

Name of the generated table. Can be used as the input of other process.

Type: String