Traffic-related Emissions and Immissions 2014
Generally, the transport-related emissions are primarily determined by the number and composition of the vehicle fleet, the lorry share, vehicle speed, the susceptibility of a particular road section to congestion, and the average specific emissions of the vehicles.
The primary roads have to cope with much of the traffic load in urban areas. Although the primary road network of Berlin shown on the map, with its length of approx. 1,770 km, accounts for only about 32 % of the total network of about 5,410 km, the major share of all mileage travelled, and of traffic-related emissions, occur on this segment of the network (in both cases over 80 % of the total).
While Table 2 contains the individual totals, the map shows the spatial distribution among the over 10,000 count sections.
Almost all 1,009 sections with – in Berlin terms – “well above average” emissions of the pollutants NOx and PM10 have an “average daily traffic volume” (DTV) of more than 20,000.
Assignment to one of the four emissions classes does not allow direct conclusions to be drawn regarding the pollution/immissions situation in the respective section. For this purpose, separate calculations for concentrations of pollutants of major substances are carried out, which take into account such necessary marginal factors as meteorology, as a non-constant quantum, and the particular route environment (cf. Methodology section). The calculation model provides an estimate of the concentration of pollutants within the urban canyons, in areas in which people are likely to be present not only temporarily.
The sections of this evaluation level are predominantly such main roads as
- Parts of the city motorway A100
- Federal roads, such as Heerstraße or Potsdamer Straße
- Other important connecting routes, such as the routes Großer Stern – Kaiserdamm/Großer Stern – Martin-Luther-Straße, or the Leipziger Straße – Gruner Straße – Otto-Braun-Straße corridor.