Intervention Category/Authors	Country	Study Design	Target Population	Summary Outcome
Combined
Roehler et al., 2013	Uganda	Cross-sectional/Time Series	Motorcyclist	Trend towards reduced helmet use from 46% to 30.5%
Muni et al., 2019	Uganda	Matched Control/Time Series	Motorcyclists	43% reduced traffic crash risk
Sebego et al., 2014	Botswana	Interrupted time series	All Drivers	12% reduction in fatal road crashes
Brown, 2007	Rwanda	Interrupted Time Series	All road users	30% overall reduction in road traffic crashes
Education
Johnson & Adebayo, 2011	Nigeria	Interrupted Time series	Motorcyclist	61% increase in safety knowledge and 52% increased compliance
Blantari et al., 2005	Ghana	Cross sectional	Drivers	No significant change in risky driving behavior
Anakwah et al., 2015	Ghana	Cross sectional	Drivers	No impact on risky driving tactics
Sween-Cadieux et al., 2018	Burkina Faso	Interrupted time series	All road users	Increased surveillance at accident prone intersections
Enforcement
Bishai et al., 2008	Uganda	Interrupted time series/Cost effectiveness	Drivers	Significant 17% reduction in fatalities
Muguku et al., 2010	Kenya	Interrupted Time Series	Traffic injury victims	No statistically. Significant change in injury severity
Nwagwu et al., 2020	Nigeria	Cross sectional	All road users	No improvement in road safety
Legislation
Abegaz et al., 2014	Ethiopia	Interrupted time series	All road users	Significant 19% decrease in non fatal crash, 12.4% reduction in fatal crashes
Road Safety
Sumner et al., 2014	Tanzania	Cluster randomized control trial	Motorcyclists	Increase in reflective vest use by 9.5%
Zimmerman et al., 2015	Tanzania	Non-randomized matched control	All road users	Increased road traffic injuries at intervention site
Dagenais et al., 2021	Burkina Faso	Interrupted time series	Police	Increased road surveillance, rapid response to crash site
Speed Control
Mutto et al., 2002	Uganda	Cross-sectional/Interrupted time series	Pedestrians	25% reduction in crash fatalities