What are the setup defaults for TNM?
TNM has built in default values for every parameter of every input type. For newly created TNM runs, the following are default values: Setup, General Input and display units: Metric Traffic entry type: LAeq1h Hourly Relative Humidity: 50% Temp. (deg C): 20 degrees Default ground type: Lawn Line of sight check, subsource height (m): 3.5 Distance limit (m): 150 Roadways Roadway width 3.66 m. Pavement type: Average Speed constraint 0.0: km/hr Vehicles affected: 100 Control Device: none Receivers Dwelling Units: 1 Height Above Ground: 4.92 ft (1.5 m) Existing Level (dBA): 0.00 Noise Reduction Goal (dB): 8.00 Impact Criteria Level (dBA): 66 Substantial Increase (dB): 10 (However, for converted TNM 1.0b runs brought into TNM 2.0 or later, the Noise Reduction Goal, Impact Criteria Level , and Substantial Increase defaults are set to zero) Barriers Type: Wall Pert. Increment: 0 # Pert. Up:0 # Pert Down: 0 Height (m): 0 Min. Height (m): 0 Max Height (m): 30.48 Cost ($/sq m): 0 Additional Cost (
