Alpine Smart Transport and Urbanism Strategies

ASTUS transnational methodology for low CO2 scenarios (O.T2.2)

Decarbonizing’ transport has become the need of the hour owing to the emission targets set by the member states of the European Union.

Within the project ASTUS (Alpine Smart Transport and Urbanism Strategies), a transnational framework for low CO2 scenarios has been developed. It acts as a guideline for local authorities to find suitable land use and transport planning solutions in order to reduce CO2 emissions from everyday travel in the Alpine Space. The methodology helps to quantify current transport-related CO2 emissions, identify levers for reducing them, and estimate potential emission savings due to the implementation of various measures.

The backbone of the methodology is a simple formula that enables the quantification of CO2 emissions from transport activities. The formula requires certain input data like the number of people, trip rate, mode share, distance travelled, occupancy rate and emission factors. All of these parameters affect the amount of CO2 generated and can thus be considered as levers for lowering emissions.

In order to facilitate the process of finding the most effective measures, the methodology contains the transnational tool CO2L, which can be applied within various typologies and contexts. The CO2L includes a calculation sheet, a data sheet and a measures sheet. The calculation sheet can be used to quantify emissions based on the formula described above. Data for a specific territory, location or relation can be inserted in this sheet in order to calculate the CO2 emissions of the baseline situation as well as the change in emissions after certain measures have been implemented. The data sheet provides sample input data for calculating CO2 emissions in different contexts. Input data from the sample can be adapted according to local knowledge. The measures sheet contains a number of potential measures for low CO2 scenario building. The measures are categorized according to the type of measure and also provide information on the possible impacts of the measure on the levers. In addition to the CO2L, exemplary storylines are included in the framework, which illustrate the scenario building process.

The methodology is transferrable to any context. However, different typologies and baselines require unique solutions. The guideline includes recommendations for a successful implementation of planning solutions. A common vision, clear objectives and targets, stakeholder engagement, knowledge about the territory, and effective measures are the essential elements for succeeding in reducing transport-related emissions. The transnational methodology, along with the templates of the CO2L, provides the user with a complete package to help reduce CO2 emissions from transport activities in the Alpine Space.