ICT 1 Scenario calculations on the effect of different source reduction on road vehicles using the TraNECam/Rotranomo calculation model, developed by H.Steven,

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Presentation transcript:

ICT 1 Scenario calculations on the effect of different source reduction on road vehicles using the TraNECam/Rotranomo calculation model, developed by H.Steven, TÜVNord. by Truls Berge SINTEF ICT, Dept of Acoustics, Trondheim, NORWAY Informal Document GRB-43-6 (43rd GRB February 2006, agenda item 6).

ICT 2 Calculation outline: Starting year is 1999, based on the Norwegian vehicle fleet and statistics. The basic trend, without any regulatory steps for vehicles or tyres is calculated for the years 2003, 2010,2015 and For all scenarios, the changes in Leq (10 m). Ltot, are calculated, as well as the changes in rolling noise, Lroll, and engine noise, Lprop. All scenarios have the same levels in 2010, as the basic trend. The calculations are done for the following traffic conditions (all free flowing): 1. ADT= HDV= 10 % Posted speed: 50 km/h 2. ADT= HDV= 15 % Posted speed: 80 km/h

ICT 3 Scenario 1: GRB/Germany –proposal Assumptions - reductions in dB – compared to 1999: Light Duty Vehicles: Heavy Duty Vehicles: YearEngine noise Tyre noise Total YearEngine noise Tyre noise Total

ICT 4 Results: GRB/Germany-proposal Reduction in Leq, compared to ADT, 10 % HDV, 50 km/h Year Lprop Lroll Ltot

ICT 5 Results: GRB/Germany-proposal Reduction in Leq, compared to ADT, 15 % HDV, 80 km/h Year Lprop Lroll Ltot

ICT 6 Scenario 2: Low ambition Assumptions - reductions in dB – both LDV and HDV, compared to 1999: YearEngine noise Tyre noise Total - 2

ICT 7 Results: Low ambition; -2 dB engine and – 2 dB tyres Reduction in Leq, compared to ADT, 10 % HDV, 50 km/h Year Lprop Lroll Ltot

ICT 8 Results: Low ambition; -2 dB engine and – 2 dB tyres Reduction in Leq, compared to ADT, 15 % HDV, 80 km/h Year Lprop Lroll Ltot

ICT 9 Scenario 3: High ambition Assumptions - reductions in dB – both LDV and HDV, compared to 1999: YearEngine noise Tyre noise Total

ICT 10 Results: High ambition; -3 dB engine and – 4 dB tyres Reduction in Leq, compared to ADT, 10 % HDV, 50 km/h Year Lprop Lroll Ltot

ICT 11 Results: High ambition; -3 dB engine and – 4 dB tyres Reduction in Leq, compared to ADT, 15 % HDV, 80 km/h Year Lprop Lroll Ltot

ICT 12 Scenario 4: Very high ambition Assumptions - reductions in dB – both LDV and HDV, compared to 1999: YearEngine noise Tyre noise Total

ICT 13 Results: Very high ambition; - 6 dB engine and – 4 dB tyres Reduction in Leq, compared to ADT, 10 % HDV, 50 km/h Year Lprop Lroll Ltot

ICT 14 Results: Very high ambition; - 6 dB engine and – 4 dB tyres Reduction in Leq, compared to ADT, 15 % HDV, 80 km/h Year Lprop Lroll Ltot