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Multi-criteria analysis and expert assessment of vehicles with different drive types regarding their functionality and environmental impact

100%

Sendek-Matysiak E.

tom z. 102

185--195

It is not easy to choose a car depending on the type of engine used in it. This is due to the diversity of properties characterising certain types of cars and doubts concerning the costs incurred during their operation (especially for new types as electric cars). Thus, this article presents a comparative analysis of cars provided with different energy sources. The analysis will allow finding the answer, which of the analysed car types best meet expectations, since both electric motor-driven vehicles and combustion engine-driven vehicles have a number of disadvantages and advantages. All compared vehicles are of the same model of a single make, with different drive sources and drive systems, classified in the same market segment. Therefore, the purpose of the article is to demonstrate, which vehicle type (that is, a car with spark-ignition engine, compression-ignition engine, electric motor, or Plug-In type hybrid drive) is currently the most optimal regarding technology, economy, and environment. For this purpose, the MAJA multi-criteria assessment method which has never before been used in comparisons of this sort was chosen.

The Optimizing the Vehicle Selection Decision in Carsharing Systems

71%

Sendek-Matysiak E.

tom Vol. 18, no 6

86--96

Balancing mobility is now a very important part of urban development. The need for change and the change in residents' attitudes toward private vehicle ownership mean that carsharing can play an important role in the functioning of urban areas. Carsharing systems provide a number of benefits both collectively and individually. First and foremost, they free up space. Just one car-sharing vehicle can replace the ownership of 8 to as many as 19 cars in private use, thereby "freeing up" 80-190 sqm of space each time. In addition, sharing vehicles in lieu of owning them has a positive impact on the environment, reducing noise and exhaust emissions. Studies show that demand for carsharing services will increase if the fleet of "cars for minutes" consists of electric cars. Hence, in this paper, taking advantage of the research gap related to the procedure for the proper selection of vehicles for carsharing, the use of vehicles with different types of propulsion including electric, was evaluated from economic, technical and environmental perspectives. The selection of vehicles has been classified as a multi-faceted, complex problem, so this study used one of Maja multi-criteria decision support methods. Five vehicles of the same model and brand, each with a different type of propulsion system, belonging to the C market segment, the most popular in carsharing systems in Poland, were considered. The results indicate that under current conditions, an electric car is not the optimal solution. Only when environmental issues have been taken into account does an electric vehicle, represent the best solution. The proposed method and the obtained results can be used by, among others, carsharing operators to organize or modernize their vehicle fleets.