Influential vectors in fuel consumption by an urban bus operator: Bus route, driver behavior or vehicle type?

Silva, João de Abreu e; Moura, Filipe; Garcia, Bernardo; Vargas, Rodrigo

doi:10.1016/j.trd.2015.04.003

Cited by 30 publications

(9 citation statements)

References 22 publications

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“…Energy efficiency in buses is discussed by de Abreu e Silva et al (2015), where factors affecting the energy efficiency in buses operating in Lisbon are explored using regression models. The authors conclude that the main factors affecting energy efficiency are vehicle types, speed and driving conditions (terrain and routes).…”

Section: Literature Review and Analytical Approachmentioning

confidence: 99%

On the road to fossil-free public transport: The case of Swedish bus fleets

Xylia

Silveira

2017

Energy Policy

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Public transport is important for Sweden to acquire a fossil-fuel independent vehicle fleet by 2030. The aim of this paper is to assess the status of Swedish public bus fleets towards decarbonization, and explore factors affecting regional performance variations and fuel choices. Environmental performance indicators such as renewable fuel shares, CO 2 emissions, and energy efficiency are analyzed nationally and regionally. Fuel preferences and best practices are investigated through a survey and interviews with experts working with strategic planning at Public Transport Authorities. Almost 60% of the bus transport volume ran on renewables in 2014 compared to 8% in 2007, but regional variations are significant, partly due to factors such as driving conditions, bus and fuel types, typical trip lengths, and climatic conditions. However, there is no strong correlation between population densities or bus transport volume and the share of renewables achieved. This places political will, strategic planning and policies to promote public transport as key factors affecting renewable fuel deployment. Environmental factors are a priority when choosing fuels, while barriers to renewable fuels are mainly economic and political. Meanwhile, despite the overall progress, achievements in energy efficiency improvement are falling short in comparison to emissions reduction and adoption of renewable fuels, thus requiring further attention.  Electricity is likely to receive increased attention according to expert survey. Highlights

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Section: Literature Review and Analytical Approachmentioning

confidence: 99%

On the road to fossil-free public transport: The case of Swedish bus fleets

Xylia

Silveira

2017

Energy Policy

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“…Interpreting the results, it seems that the higher average speed results in higher consumption (Fig. V), even though it should be the opposite according de Abreu e Silva et al [5]. This inconsistency stems from the fact that only mechanical energy is considered in the comparison and the fuel consumption while idling is neglected.…”

Section: Discussionmentioning

confidence: 84%

“…The acceleration jerks are major cause of energy demand variation [3], while the average speed has little effect on battery electric vehicle (BEV) consumption on urban city cycles [4]. However, if the average speed is lowered due to increased number of stops, the energy demand is increased [5]. Aggressive accelerations can account for 10-20 % of fuel consumption increase in urban city buses.…”

Section: State-of-the-artmentioning

confidence: 99%

Driving Style Comparison of City Buses: Electric vs. Diesel

Vepsaelaeinen

2017

2017 IEEE Vehicle Power and Propulsion Conference (VPPC)

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The key issues of transportation today are pollution and energy, which both need to be minimized. In addition to the development of emerging technologies such as electric vehicles, reducing unnecessary energy consumption is equally important. This paper focuses on the driving style differences between electric and diesel city buses. The tools used for comparing driving styles are real-world measurements, literature review and driver survey. The study shows that the electric city buses are driven more aggressively and faster on average. The difference is due to electric powertrain's low-level noise feedback and superior power at low speeds.

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“…Authors in [20] explain how the models resulting after using this method only include the variables that best explain the distribution of the dependent variable, according to their statistical significance (≤0.05) and efficiency (increase in the r − squared and the F − statistic above a predefined threshold).…”

Section: Methodsmentioning

confidence: 99%

Economic Impact of the Use of Inertia in an Urban Bus Company

et al. 2017

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Public transport companies face great expenses. In order to be profitable companies, they need to reduce costs in all aspects. In addition, many countries have increased taxes to force transport companies to reduce their fuel consumption and, thus, greenhouse effect emissions. Efficient driving is the cheapest way to achieve this goal. In this paper, we analyze the economic impact of one of the most influential efficient driving techniques in an urban bus company. We calculate the difference of consumption between a well-performed deceleration using the inertia of the vehicle and a loss of speed obtained by using the brakes. For this purpose, we compare a real track performed by any driver in a precise vehicle with a simulated ideal track. To obtain the deceleration of the simulation, we develop a linear regression model on over 170,000 samples captured from the same vehicle over a period of one month. The results show that the costs of the vehicle under test in one month may be reduced by more than 2500 € by using this technique. With these results, we can see that it is worth trying to anticipate different situations while driving only by applying inertia adequately.

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Influential vectors in fuel consumption by an urban bus operator: Bus route, driver behavior or vehicle type?

Cited by 30 publications

References 22 publications

On the road to fossil-free public transport: The case of Swedish bus fleets

On the road to fossil-free public transport: The case of Swedish bus fleets

Driving Style Comparison of City Buses: Electric vs. Diesel

Economic Impact of the Use of Inertia in an Urban Bus Company

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