Vehicle Routing for Garbage Collection and Transportation Using Saving Algorithm and Modified Saving Algorithm
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Abstract
This research aims to optimize the waste collection and transportation routes for a case study, a subdistrict administrative organization. The research employs two heuristic algorithms: the Clark-Wright Savings Algorithm (CW) and the Modified Clark-Wright Savings Algorithm (Modified CW). The goal is to determine efficient routes according to conditions of vehicle capacity and employee work hours constraints, while ensuring that all waste from every village within the organization's responsibility is collected for disposal each week. The results showed that the Modified CW with lambda of 0.1 to 0.9 provided the routes with the lowest total distance and transportation cost compared to the CW and the case study organization's current methods. These results show that it will also reduce the operating time to only four working days a week. Additionally, the total distance was reduced by 1% and the total cost was reduced by 18.83%. As a result, the case study saves costs up to 1,805.99 baht per week.
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