We assumed that the total travel demand (yearly driven passenger units) shifts from private car ownership to CS services over a time of 20 years [1]. The possibility of buying a private car and a CS car is calculated by dividing the travel demand and the maximal travel demand possible, multiplied by the number of families without a private car respectively with the number of CS families. Private cars will abrade increasing the number of families without a car. However, in our model they will decide to join CS thereby increasing the number of CS families. By this the number of private cars will decrease while number of CS cars will increase. Gasoline CS cars will change over time into electric CS cars with a benefit for the CO2 emission due to lower lifecycle emission. Since CS cars are utilized more, they will abrade faster. However, this will overall result in more fuel efficient cars with another benefit for CO2 emissions.

Private Autos(100.000) Familien ohne private Autos(20.000) CS Familien(1.000) CS Autos - Benzin( 5.000) Bedarf private Autos(1.920.000.000 yearly passanger distance) Umstiegsrate(0.25) Kraftstoffeffizienz(0.15) CO2 emission of gasoline car(24 t CO2) [2] CO2 emission of electric car(19 t CO2)[2]

Thing to try (with influence on CO2 emission of CS cars):

Change the exchange-rate with which CS cars with gasoline motor are exchanged by electric motor  Change the fuel-efficiency of CS cars Both will influence the reduction of CO2 emission by CS cars

Extending the model:Demand for public transportation Would create a more realistic model since there are not only the options of having a private car or using CS.Public transportation could help reduce overall CO2 emissions.

Credits and references:

Cornelius Frank & Ameur GlouiaDepartment of Bioengineering SciencesWeihenstephan-Triesdorf University of Applied Science85354 Freising, Germanycornelius.frank@student.hswt.de / ameur.glouia@student.hswt.de

[1] Kawaguchi, T. (2019). Scenario Analysis of Car- and Ride-Sharing Services Based on Life Cycle Simulation. Procedia CIRP. 80: 328-333
[2] Low Carbon Vehicle Partnership. (2015). Lifecycle emissions from cars.

The model simulates the local environmental (specifically greenhouse gas emissions), economic, and resource impacts of transitioning from internal combustion engine vehicles (ICEVs) to electric vehicles (EVs) for personal ownership in New York City in the context of a sustainable program of new energy vehicles, which is the context of the current era. To be realistic, we combine delay and stochasticity in this model to simulate the real world. By understanding the model, one can gain insight into the importance of EV penetration for sustainable development.

This is a clone of "Fast Fashion ISCI 360 Solutions Final submission" created by user "V B" which we are using as the foundation for an exercise in the DTU course 12100 "Quantitative sustainability".

Please refer to the notes for each variable and stock to see which links were hidden from the model.

Part 2: Our solution for the issue surrounding "Fast Fashion" focuses on increasing individuals education about sustainability and how they can help reduce negative impacts on the environment by shopping less, recycling and donating. This effect of education on sustainability is seen in the "Online Shopping" equation where the impact of "Education on Sustainability" is increased by x1.5 which impacts the entire model. Furthermore, components of the feedback loop on the right are also influenced by increasing education on sustainability and thus, those values were altered accordingly. These values were chosen arbitrarily by taking into account that doubling any value is not realistic so the change should be between x1.0 and x2.0.

This is a clone of "Fast Fashion ISCI 360 Solutions Final submission" created by user "V B" which we are using as the foundation for an exercise in the DTU course 12100 "Quantitative sustainability".

Please refer to the notes for each variable and stock to see which links were hidden from the model.

Part 2: Our solution for the issue surrounding "Fast Fashion" focuses on increasing individuals education about sustainability and how they can help reduce negative impacts on the environment by shopping less, recycling and donating. This effect of education on sustainability is seen in the "Online Shopping" equation where the impact of "Education on Sustainability" is increased by x1.5 which impacts the entire model. Furthermore, components of the feedback loop on the right are also influenced by increasing education on sustainability and thus, those values were altered accordingly. These values were chosen arbitrarily by taking into account that doubling any value is not realistic so the change should be between x1.0 and x2.0.