CUED Publications database

Relationship between heavy vehicle speed limit and fleet fuel consumption on minor roads

Wilson, G and Morrison, G and Midgley, W and Cebon, D (2016) Relationship between heavy vehicle speed limit and fleet fuel consumption on minor roads. Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 230. pp. 1461-1478. ISSN 0954-4062

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Abstract

© 2015 Institution of Mechanical Engineers. This paper investigates the traffic-related effects of a proposal to increase the speed limit from 40 mile/h to 50 mile/h, for heavy goods vehicles greater than 7.5 tonnes, on single carriageway roads. A 'microscopic' single carriageway traffic simulation is developed by combining the 'enhanced intelligent driver model' with a single carriageway gap-acceptance passing model. Fuel consumption estimates are made using engine characteristic maps and a 'fuel optimal' gear selection scheme, where vehicle trajectories from the traffic simulations are taken as input drive-cycles. Traffic congestion and fleet fuel consumption are specifically addressed, though implications regarding passing behaviour and traffic safety are also noted. Results indicate that the proposed 50 mile/h heavy goods vehicles speed limit would reduce traffic congestion by over 37% and increase fleet fuel consumption by approximately 0.5 L/100 km.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: Div C > Applied Mechanics
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 19:33
Last Modified: 17 Oct 2017 01:39
DOI: