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Vehicle routing and scheduling with time-varying data: A case study

Research output: Contribution to journalJournal articlepeer-review

Published
<mark>Journal publication date</mark>2010
<mark>Journal</mark>Journal of the Operational Research Society
Issue number3
Volume61
Number of pages8
Pages (from-to)515-522
Publication StatusPublished
<mark>Original language</mark>English

Abstract

A heuristic algorithm is described for vehicle routing and scheduling problems to minimise the total travel time, where the time required for a vehicle to travel along any road in the network varies according to the time of travel. The variation is caused by congestion that is typically greatest during morning and evening rush hours. The algorithm is used to schedule a fleet of delivery vehicles operating in the South West of the United Kingdom for a sample of days. The results demonstrate how conventional methods that do not take time-varying speeds into account when planning, except for an overall contingency allowance, may still lead to some routes taking too long. The results are analysed to show that in the case study using the proposed approach can lead to savings in CO2 emissions of about 7%.