1.A.3.b.vii Emissions from Road Abrasion

Last updated on 10 Dec 2013 11:53 (cf. Authors)

Short description

In sub-categories 1.A.3.b vii - Road transport: Automobile road abrasion emissions from road abrasion in Road Transport are reported. Therefore, this sub-category is an important source for a) particle emissions and b) emissions of heavy metals, POPs etc. included in these particles.

NFR-Code Name of Category Method AD EF Key Source for (by1)
1.A.3.b vii Automobile road abrasion T3 NS CS PM2.5 & PM10 & TSP (L)

1 T = key source by Trend / L = key source by Level


Activity Data

For detailed mileage data, please see superordinate chapter.

Emission factors

Emission factors used for 2011 estimates

Material Road Abrasion
Vehicle type PCs LDVs HDVs Buses Two-wheelers
Particulate Matter [mg/km]
PM2.5 4.050 4.050 20.520 20.520 1.620
PM10 7.500 7.500 38.000 34.200 3.000
TSP 15.000 15.000 76.000 76.000 6.000
Heavy Metals [µg/km]
Priority HM
Pb 0.062 0.062 0.312 0.062 0.025
Hg 0.000 0.000 0.000 0.000 0.000
Cd 0.003 0.003 0.016 0.003 0.001
Other HM
As 0.039 0.039 0.198 0.039 0.016
Cr 1.080 1.080 5.472 1.080 0.432
Cu 0.037 0.037 0.186 0.037 0.015
Ni 0.570 0.570 2.888 0.570 0.228
Se 0.000 0.000 0.000 0.000 0.000
Zn 1.290 1.290 6.536 1.290 0.516

Trend discussion for Key Sources

NFR 1.A.3.b vii - Emissions from road abrasion is key source for emissions of

  • PM2.5 regarding level,
  • PM10 regarding level,
  • TSP again regarding level.

Particulate Matter - PM2.5, PM10 & TSP

(from wear/abrasion only; no fuel combustion included)

Emissions from road abrasion are linked directly with the mileage driven. Thus, the overall trend of total PM2.5 and PM10 as well as TSP emissions from road abrasion is similar to the trend for total driven mileage.

In the same way, the changes within the emissions from passenger cars, heavy and light duty vehicles, buses or mopeds & motorcycles correlate with those for the mileages driven by these types of road vehicles.


Recalculations were carried out due to a regular the revision of the TREMOD software, resulting in only slight changes in mileage data for 1990-2007 and larger changes for 2008 & 2009.
In contrast to this revision of activity data, emission factors remain unchanged compared to submission 2011 (see superordinate chapter).

For pollutant specific information on qualitative and quantitative impacts on 1990 and 2009 emission estimates see chapter 11. Recalculations and the following chapters.


Uncertainty estimates for activity data of mobile sources derive from research project FKZ 360 16 023: "Ermittlung der Unsicherheiten der mit den Modellen TREMOD und TREMOD-MM berechneten Luftschadstoffemissionen des landgebundenen Verkehrs in Deutschland". For detailled information, please refer to the project's final report here (German version only!)

Uncertainty estimates for emission factors were compiled during the PAREST research project. Here, the final report has not yet been published.

Planned improvements

At the moment, no category specific improvements are planned.


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