Environmental impact model and HBEFA
The Visum add-on module PrT noise and pollutant emissions is used to calculate the environmental impact (noise and pollutant emissions) caused by motorized private transport. Three procedures for calculating environmental impact are available:
- Noise calculation according to RLS-19 (Noise volume).
Calculation of the length-based acoustic power level according to RLS-19 (User Manual: Calculating noise volume).
- Noise-Emis-Nordic (Noise volume)
Calculation of noise emission levels in accordance with Nordic Council of Ministers (1996) (User Manual: Calculating noise volume).
- Pollution-Emis (Air pollution emissions)
Calculation of air pollution emissions in accordance with emission factors of the Swiss Federal Office for the Environment (BAFU) (User Manual: Calculating air pollution emissions).
The Visum add-on module HBEFA allows you to calculate emission values in Visum by link, territory or network-wide. The calculation is based on the Handbook Emission Factors for Road Transport (HBEFA-based emission calculation).