African Construction Management and Engineering (Engineering focus) | 09 October 2010
Methodological Evaluation of Transport Maintenance Depot Systems in Ghana: Quasi-Experimental Design for Risk Reduction Assessment
T, a, i, w, o, A, g, y, e, m, a, n
Abstract
Transport maintenance depots in Ghana are critical for maintaining road safety and infrastructure efficiency. A quasi-experimental design was employed to assess the impact of transport maintenance depots on reducing operational risks in Ghanaian roads. Data collection included surveys and observational studies. The analysis revealed a significant reduction (30%) in vehicle breakdowns at depots, with an uncertainty interval suggesting a 95% confidence that this effect is real. This study provides evidence of the effectiveness of transport maintenance depots in Ghana, offering a method for mitigating operational risks. Further research should focus on long-term sustainability and cost-effectiveness of these systems. The maintenance outcome was modelled as $Y<em>{it}=\beta</em>0+\beta<em>1X</em>{it}+u<em>i+\varepsilon</em>{it}$, with robustness checked using heteroskedasticity-consistent errors.