Multi-Criteria spatial-based modelling for optimal alignment of roadway by-passes in the Tlokweng Planning Area, Botswana

In this study, Spatial Multi-Criteria Evaluation and the least cost path analysis were applied to find the optimal by-pass road alignment in the Tlokweng Planning Area in Botswana. One-At-a-Time sensitivity analysis and the statistical test for zero proportion were used to investigate the robustness...

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Bibliographic Details
Main Authors: Sekulic, M, Siljeg, A, Mansourian, A, Watson, Lisa, Cavric, Branko
Format: Article
Language:English
Online Access:Request full text
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Summary:In this study, Spatial Multi-Criteria Evaluation and the least cost path analysis were applied to find the optimal by-pass road alignment in the Tlokweng Planning Area in Botswana. One-At-a-Time sensitivity analysis and the statistical test for zero proportion were used to investigate the robustness of the entire model. Four alternative by-pass roads were produced stressing economic, environmental, and social suitability as well as trade-offs between the groups. The results showed that the social alternative performs best. Sensitivity analysis and statistical test for zero proportion revealed four criteria as sensitive.