Economic aspects of nontechnical measures to reduce traffic emissions
Overview
Background & policy context:
Over the last two decades, the pollutant emissions from motorised transport have decreased significantly thanks to technical advances in motor vehicles. However, this does not solve the problem of traffic-related pollution. Air pollution causes cardiovascular and respiratory diseases, damages crop quality, reduces the biodiversity of plants, despite growth-enhancing properties and contributes to global warming (UNECE, 2012). The decisive factor for the quality of life and health, however, is not primarily the total emissions of air pollutants but their concentration in urban areas. Another unresolved problem concerning road traffic is its noise emissions. Against this background, the European Union, nation states, cities and communities are promoting measures to further reduce the emission of greenhouse gases, air pollutants and noise from all modes of transport.
Objectives:
The study “Economic aspects of non-technical measures to reduce traffic emissions” looks at non-technical options to reduce the emissions of motorised road traffic. The focus of the study is on the effect of measures to reduce emissions and the associated consequences for the private sector and the economy as a whole.
Methodology:
The current study examines the economic consequences of alternative mobility concepts from two different perspectives:
- the user-based or private sector perspective, taking into consideration the environmental costs and
- the macro-economic perspective, which analyses the macro-economic impacts of the measures under examination.
Five measures to reduce traffic emissions are examined from the viewpoint of both perspectives. The term “measure” describes transport policy objectives which are to be implemented to reduce traffic-related emissions. The measures cover key mobility indicators such as modal split, distances traveled or fuel consumption. They represent ways of reducing the traffic-related emissions of greenhouse gases, air pollutants and noise. In the economic context, every measure is allocated a specific target value, for example, the distances traveled or the share of different modes of transport in all journeys, passenger- or tonne-kilometers (modal split). Depending on the type of measure, these refer to different regional contexts and address different target variables. The impacts on user costs and time budgets, macro-economic indicators and the external effects of traffic are examined for all measures.
- Measure M1 describes the effects of increasing the right of way for bicycles and pedestrians in city centers at the expense of car users by 10 percentage points. This means an increase in the modal split share of non-motorised transport by 27 %.
- Measure M2 examines the economic and ecological effects of increasing the share of local public transport in urban passenger services by 10 percentage points. Compared to the present share of 8%, this means the share is more than doubled compared to a reference scenario assuming constant transport mode shares until 2030.
- Measure M3 examines the effects of shortening the average distances traveled by car. This assumes that transport participants change destinations by substituting those farther away by closer alternatives.
- Measure M4 investigates the macro-economic consequences and sustainability effects of more efficient car use.
- Finally, measure M5 investigates the economic and ecological impacts of increasing the railway share in national freight transport by 10 percentage points. From the railways’ perspective, this would correspond to an increase of almost 80 % compared to a reference scenario until 2030.
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