Tanzânia: Qualidade das estradas, 1(baixa) - 7(alta): Para este indicador, World Economic Forum fornece dados para Tanzânia de 2006 a 2015. O valor médio por Tanzânia durante este período foi 2.98 points com o mínimo de 2.48 points em 2008 e o máximo de 3.34 points em 2015.
Definição: The Road quality indicator is one of the components of the Global Competitiveness Index published annually by the World Economic Forum (WEF). It represents an assessment of the quality of roads in a given country based on data from the WEF Executive Opinion Survey, a long-running and extensive survey tapping the opinions of over 14,000 business leaders in 144 countries. The road quality indicator score is based on only one question. The respondents are asked to rate the roads in their country of operation on a scale from 1 (underdeveloped) to 7 (extensive and efficient by international standards). The individual responses are aggregated to produce a country score.