Investigation on the effects of roadside frictions on travel performance and level of service in Kigali Roads

Abstract

The economic development of a nation depends on efficient transportation and good mobility. However, the problem of congestion is now heavy for urban and suburban roads in developing countries including Kigali’s road bottlenecks. This study attempted to analyze the performance of Kigali urban traffic in terms of physical indicators, time-base indicators, and level of service; to compare and to model traffic congestion using Greenshields’ model, Greenberg’ model, and Kerner’s three-phase theory; and to identify key dynamic roadside friction factors that are traffic control factors and significantly affect urban traffic performance. As result, both the Greenshields model and Greenberg's Model can't clarify the attributes of traffic and congestion progressively traffic information while Kerner's three-phase theory is pertinent to advance both subjective and quantitative portrayals of congestion characteristics. In this investigation, a flow-density method technique was applied to build up Kerner's line [J] and jam characteristics. Results demonstrated that there is a quantitative distinction in congestion attributes of UK, USA, Germany's expressways and metropolitan streets in Kigali though, subjectively, congestion qualities dependent on Kerner's threephase traffic hypothesis are the equivalent. At last, new scopes of low moving speed and meantime delay in-vehicle speeding up at the downstream front of a wide moving jam were attracted expansion to Kerner's values for wide moving jam attributes. Connections between speed, density, and stream flowrate considering average dynamic roadside friction factors were created and all models give how well future results are probably going to be anticipated as portrayed by the R2-and R2 – adjusted worth, and other ANOVA measurements contrasted with different models as of late created by researchers. In view of ANOVA examination results, the key unique roadside friction factors (RSF) components that influence traffic stream parameters, for example, density and average speed were known. The examination based data and discoveries from this research report ought to be utilized in setting out rules to force a few limitations to eradicate roadside friction events and impacts of dynamic roadside friction factors and not to keep arising later on.