Randomized field trial evaluates depot efficiency and cost savings in Ghana, suggesting investment in diagnostics.
The transport maintenance depot systems in Ghana are critical for ensuring efficient vehicle operations, but there is limited empirical research on their effectiveness and cost-effectiveness. A randomized field trial was conducted across multiple depots in Ghana, with data collected over a six-month period. Depot efficiency and costs were measured using statistical models. Depot A showed an average reduction of 15% in vehicle downtime compared to the control group (p < 0.05), indicating improved maintenance system effectiveness. The randomized field trial demonstrated significant cost savings for Depots B and C, with a confidence interval of ±3%, suggesting robust performance metrics. Based on findings, depots should invest in advanced diagnostic tools to further enhance efficiency and reduce downtime. The maintenance outcome was modelled as Yᵢₜ=β₀+β₁Xᵢₜ+uᵢ+εᵢₜ, with robustness checked using heteroskedasticity-consistent errors.
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Agbeli et al. (2000) studied this question.
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