Report - DCE - Nationalt Center for Miljø og Energi

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The respective source category distributions for TSP, PM10 and PM2.5 emissions
are identical for each of the non-exhaust emission type’s brake wear,
tyre wear and road abrasion, and, hence, only the PM10 distributions are
shown in Figure 3.75. For tyre wear and road abrasion passenger cars caused
the highest emissions in 2010, followed by trucks, light-duty vehicles, buses
and 2-wheelers. For brake wear the most dominant emissions come from
passenger cars followed by light-duty vehicles, trucks, buses and 2-wheelers.
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Trucks
19%
Light duty
vehicles
22%
Buses
6%
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Trucks
23%
Light duty
vehicles
13%
Buses
6%
wheelers-2
1%
wheelers-2
0%
Passenger cars
52%
Passenger cars
58%
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Trucks
24%
Light duty
vehicles
19%
Buses
6%
wheelers-2
2%
Passenger cars
49%
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100%
90%
80%
70%
60%
50%
40%
30%
20%
10%
0%
TSP PM10 PM2.5
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Exhaust
Tyre wear
Brake wear
Road abrasion
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Figure 3.75 also shows the exhaust/non-exhaust distribution of the total particulate
emissions from road transport, for each of the size classes TSP, PM10
and PM2.5. The exhaust emission shares of total road transport TSP, PM10
and PM2.5 are 38, 49 and 64 %, respectively, in 2010. For brake and tyre wear
and road abrasion the TSP shares are 14, 22 and 26 %, respectively. The same
three sources have PM10 shares of 18, 17 and 17 %, respectively, and PM2.5
shares of 9, 15 and 12 %, respectively. In general, the non-exhaust shares of
total particulate emissions are expected to increase in the future as total exhaust
emissions decline. The latter emission trend is due to the stepwise
strengthening of exhaust emission standards for all vehicle types.
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In Table 3.24, the heavy metal emissions for road transport and other mobile
sources are shown for 2010 in NFR sectors. The emission figures in the time
series 1990-2010 are given in Annex 2.B.16 (NFR format) and are shown for
1990 and 2010 in Annex 2.B.15 (CollectER format).
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