Igbinosun, L. ., and S. . Omosigho. “Mathematical Model to Determine the Relationship Between Road Traffic Flow, Vehicle Speed and Road Traffic Gridlock in a Road Link”. Agriculture and Natural Resources, vol. 49, no. 5, Oct. 2015, pp. 806-1, https://li01.tci-thaijo.org/index.php/anres/article/view/243753.