SARSAI: Low Cost Speed Management Interventions around Schools – Dar es Salaam, Tanzania

This paper looks at the change in speed around nine schools in Dar es Salaam, Tanzania after the introduction of lowcost road safety interventions. It compares the speeds ‘before’, ‘two weeks after’ and ‘one year after’ intervention at nine sites – five of which were on a paved road and four of which were on an unpaved road. The purpose of the study was to determine the levels of change in speed at the identified sites over time and establish what level speeds were at, one year post intervention. Average and 85th percentile speeds reduced two weeks after intervention and though to a smaller extent one year after intervention compared to baseline. Speeds were also analysed by vehicle category. Motorcycles on unpaved roads were found, after the initial drop in speeds immediately after intervention, to have a significant rise in speed after one year of initial intervention. The study identified the need for further work looking specifically at ways to reduce speeds of motorcycles on an unpaved road setting, and the need for more sustainable speed management methods on this road type in general.