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This paper examined the short‐ and long‐run impacts of gasoline price, macroeconomic factors and road length on road traffic crashes, injuries and fatalities in Nigeria. Annual data from 1995 to 2019 and autoregressive distributed lag approach were employed. Results suggest that gasoline price, per capita income, road length and population density significantly influence road safety outcomes. Gasoline price has a positive short‐run impact on crashes, injuries, and fatalities contrary to findings in developed countries. Road crashes tend to decrease when income increases in the short term. Population density leads to improvement in road safety outcomes while road length exacerbates it. Government's policy on gasoline price increase could worsen road safety outcomes unless it is accompanied by improvement in road infrastructure, safe public transport and economic growth, [ABSTRACT FROM AUTHOR]

This paper investigates the effect of financial development on domestic investment in West African countries. The study uses data from 1985 to 2019 and employs the pooled mean group technique. The main finding of the study is that financial development has a positive effect on domestic investment in the long run but an insignificant effect in the short run. Furthermore, remittances, real GDP per capita and trade openness increase investment rate. The results of causality tests support the view that investment is a channel through which financial development stimulates economic growth. Therefore, it is reasonable for the selected countries to formulate policies that promote domestic credit to the private sector in order to ease liquidity constraints and increase investment and economic growth. [ABSTRACT FROM AUTHOR]

A growing body of literature highlights the importance of export sophistication for economic development. Given the newness of the literature on export sophistication, its determinants are under‐exploited. As a pioneer study, this paper attempts to fill this gap in the literature by examining the effect of infrastructure development on export sophistication. Based on a panel of 45 African countries over the period 2003–2016, the results of the different estimations show that infrastructure, including transport, electricity, ICT and access to water and sanitation, improves export sophistication in Africa. Our results also show that the effect of infrastructure varies at different intervals of the export sophistication distribution. Therefore, improved infrastructure would allow African countries to not only improve their export structure but also achieve sustainable and durable growth. [ABSTRACT FROM AUTHOR]