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1.A.3.b vii - Road Transport: Automobile Road Abrasion

Short description

In sub-category 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.

Category Code Method AD EF
1.A.3.b vii T1, T3 NS, M CS

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Method(s) applied
D Default
T1 Tier 1 / Simple Methodology *
T2 Tier 2*
T3 Tier 3 / Detailed Methodology *
C CORINAIR
CS Country Specific
M Model
* as described in the EMEP/EEA Emission Inventory Guidebook - 2019, in category chapters.
(source for) Activity Data
NS National Statistics
RS Regional Statistics
IS International Statistics
PS Plant Specific
As Associations, business organisations
Q specific Questionnaires (or surveys)
M Model / Modelled
C Confidential
(source for) Emission Factors
D Default (EMEP Guidebook)
CS Country Specific
PS Plant Specific
M Model / Modelled
C Confidential
NOx NMVOC SO2 NH3 PM2.5 PM10 TSP BC CO Pb Cd Hg As Cr Cu Ni Se Zn POPs
NA NA NA NA L/- L/- L/- NE NA -/- -/- NA -/- -/- -/- -/- NE -/- NA

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L/- key source by Level only
-/T key source by Trend only
L/T key source by both Level and Trend
-/- no key source for this pollutant
IE emission of specific pollutant Included Elsewhere (i.e. in another category)
NE emission of specific pollutant Not Estimated (yet)
NA specific pollutant not emitted from this source or activity = Not Applicable
* no analysis done

Methodology

Activity data

Abrasive emissions from tyre and brake wear are estimated based on vehicle-type specific mileage data. For detailed mileage data, please see superordinate chapter on abrasive emissions from road vehicles.

Emission factors

Table 1: Emission factors applied

PCs LDVs HDVs Buses Mopeds Motorcycles
BC [mg/km] NA
PM2.5 4.05 4.05 20.5 20.5 1.62 1.62
PM10 7.50 7.50 38.0 34.2 3.00 3.00
TSP 15.0 15.0 76.0 76.0 6.00 6.00
Pb [µg/km] 0.00006 0.00006 0.00031 0.00006 0.00002 0.00002
Hg NA
Cd 0.000003 0.000003 0.000016 0.000003 0.000001 0.000001
As 0.00004 0.00004 0.00020 0.00004 0.00002 0.00002
Cr 0.00108 0.00108 0.00547 0.00108 0.00043 0.00043
Cu 0.00004 0.00004 0.00019 0.00004 0.00001 0.00001
Ni 0.00057 0.00057 0.00289 0.00057 0.00023 0.00023
Se NA
Zn 0.00129 0.00129 0.00654 0.00129 0.00052 0.00052

Table 2: Outcome of Key Category Analysis

for: TSP PM10 PM2.5
by: Level Level Level


Emissions from road abrasion are directly linked to driven mileage. Thus, the overall trend of emissions from road abrasion is similar to the trend for total driven mileage.

Here, as described for tyre and brake wear, after a moderate decrease during the Covid-19 pandemic, mileage related abrasive emissions show a steady recovery not yet reaching pre-pandemic levels.

Annual particulate matter emissions from road-surface wear. Annual PM2.5 emissions from road-surface wear.

Recalculations

With all input data remaining unrevised, no recalculations were made compared to the previous submission.

Planned improvements

Besides a routine revision of the underlying model, no specific improvements are planned.