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Article

Taxi Downsizing: A New Approach to Efficiency and Sustainability in the Taxi Industry

1
College of Civil Engineering and Architecture, Zhejiang University, 866 Yuhangtang Rd, Hangzhou 310058, China
2
Department of Civil & Environmental Engineering, National University of Singapore, Singapore 117576, Singapore
*
Author to whom correspondence should be addressed.
Sustainability 2019, 11(18), 4944; https://doi.org/10.3390/su11184944
Received: 14 August 2019 / Revised: 4 September 2019 / Accepted: 9 September 2019 / Published: 10 September 2019
(This article belongs to the Special Issue Sustainability in Transportation and the Built Environment)
Taxis are considered one of the symbols of urban transportation systems due to their large daily traveling mileage. Taking into account hatchback cars with two rows of seats, this paper presents a new approach to taxi efficiency by decreasing the vehicle size. The policy’s influences on fuel consumption, emission, safety, and economic efficiency are comprehensively analyzed. With supplementary surveys of taxi passengers, a total of 1110 taxi trips are observed at nine busy locations. The results show that the trunk is not used in 88% of taxi trips in Hangzhou. It is estimated that downsizing each taxi results in annual decreases in fuel consumption by 1600 L, CO by 311.9 kg, HC by 15.4 kg, and NOx by 8.9 kg. By using a small car as a taxi instead of a standard car, the annual fixed cost plus the fuel cost will be reduced by 38%. By analyzing GPS data of 7081 taxis in Hangzhou, we found a network-wide average taxi speed of 23 km/h. Since the average speed of taxis is relatively low in urban areas, the use of small cars could provide drivers with higher maneuver capability, while increasing the safety of small cars. According to the findings of this paper, using small cars will increase the efficiency and sustainability of the taxi industry. View Full-Text
Keywords: taxi downsizing; sustainability; GPS data; fuel consumption; emission; economic efficiency taxi downsizing; sustainability; GPS data; fuel consumption; emission; economic efficiency
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MDPI and ACS Style

Zahiri, M.; Liu, J.; Chen, X. Taxi Downsizing: A New Approach to Efficiency and Sustainability in the Taxi Industry. Sustainability 2019, 11, 4944. https://doi.org/10.3390/su11184944

AMA Style

Zahiri M, Liu J, Chen X. Taxi Downsizing: A New Approach to Efficiency and Sustainability in the Taxi Industry. Sustainability. 2019; 11(18):4944. https://doi.org/10.3390/su11184944

Chicago/Turabian Style

Zahiri, Majid; Liu, Jielun; Chen, Xiqun 2019. "Taxi Downsizing: A New Approach to Efficiency and Sustainability in the Taxi Industry" Sustainability 11, no. 18: 4944. https://doi.org/10.3390/su11184944

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