Im Folgenden wird die Klimaschutzwirkung der aktuellen Flottenverbrauchsnorm der Europäischen Kommission für Deutschland diskutiert und in den Kontext der im Jahr 2020 signifikant angestiegenen Zahl von verkauften Pkw mit Elektromotor gesetzt.
Dabei wird die aktuelle Entwicklung der Pkw-Flotte in Deutschland mit mehreren Szenarien verglichen. Erstens wird eine mögliche Verschärfung aktuell gültigen Rechts im Sinne eines European Green Deal angedacht. Zweitens wird dieser eher technische Zugang verglichen mit der Möglichkeit, durch Vermeidung und Verlagerung auf Fahrten mit dem Pkw zu verzichten. Drittens wird die Rolle von Plug-In-Hybriden diskutiert.
Auf dieser Basis werden Politikempfehlungen ausgesprochen, wie die Flottenverbrauchsnorm weiterentwickelt werden kann, um die Klimaschutzambition zu erhöhen.
Investments in urban transport should deliver the maximum economic, social and environmental benefits; in times of constrained budgets, projects' economic viability is often the deciding factor. This paper discusses the current practices and challenges facing cities in assessing urban transport interventions. On this basis, it develops options for decision-makers to appraise small-scale, sustainable urban transport policy measures.
The analysis of current appraisal practice shows that data requirements and complexity are cities’ main obstacles appraising projects and comparing potential alternatives. Additionally, there is often a risk that project appraisal enters the planning process too late to play any meaningful role. Conducting a Cost-benefit
analysis (CBA) ex-ante is often only approved if the implementation of the measure in question is already likely. Often, a CBA is a means to access funds rather than a basis for decision-making. Project appraisal of small-scale and non-infrastructure-based measures is often simply too expensive.
On the basis of these findings, the paper discusses the following alternatives to comprehensive CBAs: 1) learn from others, 2) use a simplified assessment method, 3) rely on norms and values. All of these options aim to cope with the trade-off between effort and certitude. In practice, some policy-makers may already apply one or more of these options, but this has not been documented in a systematic manner. A systematic documentation of such practices could be a major step forward for implementation of sustainable and integrated urban transport projects, as it would shed some light on the reasoning behind decisions, from which conclusions could be drawn on the likely follow-on effects thereof and also possible improvements to the process.
Evaluation of energy saving measures in the transport sector : a review of efforts and certainty
(2009)
The EU Directive on Energy End-use Efficiency and Energy Services (ESD) set an indicative target for EU Member States to achieve a 9% annual energy saving by 2016 from new energy efficiency improvement (EEI) measures. Until now there has been no common methodology on how to measure and evaluate such savings. An international consortium funded by the Intelligent Energy Europe programme and co-ordinated by the Wuppertal Institute has developed harmonised methods for the evaluation of end-use EEI measures. The European Commission encourages Member States to prove energy savings with the help of these methods.
From the evaluation point of view, the transport sector is a special case. In the transport sector, data collection appears to be difficult. A number of values can be derived from existing national statistics, but sources have to be analysed in order to be operational. In passenger transportation, measures prevalently aim at changing mobility behaviour. Mobility behaviour depends on specific socio-economic and local conditions and might therefore vary considerably from measure to measure. Often, only surveys that are well-defined for certain conditions can generate appropriate data.
The paper discusses availability and certainty of data sources to be derived to evaluate EEI measures in passenger transportation. It first introduces two transport-related bottom-up evaluation methods for the transport sector. One aims at evaluating measures fostering vehicle energy efficiency. The other one aims at evaluating modal shifts. The paper then points to sources of corresponding data and the way the data have to be analysed. Thereby it demonstrates the trade-off between evaluation costs and the level of certainty. In so doing, it gives recommendations how to conduct the evaluation of transport-related EEI measures with keeping both efforts low and certainty high.