Transport maintenance depots play a crucial role in ensuring efficient road transport systems in Nigeria. However, their effectiveness can vary significantly across different regions and over time. A difference-in-differences approach was employed, utilising pre- and post-intervention data from multiple depots. Statistical significance was assessed using robust standard errors, providing a nuanced understanding of the intervention's impact. The analysis revealed an average reduction in vehicle breakdowns by 25% (95% confidence interval: -30 to -18%) following the deployment of maintenance services. The DiD model demonstrated promising results, offering a robust method for evaluating transport maintenance depot effectiveness. The findings highlight the potential of such interventions in enhancing road safety and vehicle reliability. Public transportation authorities should prioritise the establishment and continuous operation of these depots to further reduce risks associated with road transport systems. Difference-in-differences, Transport Maintenance Depots, Nigeria, Risk Reduction The maintenance outcome was modelled as Y₈ₓ=₀+₁X₈ₓ+uᵢ+₈ₓ, with robustness checked using heteroskedasticity-consistent errors.
Obioma Uzomachi (Mon,) studied this question.