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Does TNM calculate multiple perturbable barriers simultaneously?

April 26, 2017barriers CALCULATE simultaneously TNM

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Does TNM calculate multiple perturbable barriers simultaneously?

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TNM does not calculate more than 2 perturbable barriers simultaneously between a roadway and the closest receiver. TNM will only choose the two most effective perturbable barriers based on their INPUT heights (not the perturbable heights) and calculate levels for those barriers only. Please refer to the Perturbable barrier reduction section on Page 77 of the TNM tech manual.