Comparative speed study on a particular roadway section of Dhaka city

Abstract

Road crashes are a leading cause of deaths and serious injuries around the world. Several studies justifies that speed is the major cause related to the risk of getting involved in a road accident. This paper represents the speed scenario of a particular roadway section of Dhaka-Mirpur route. The speed data of various types of vehicles that use the particular roadway were taken for this study. Along with vehicle speeds, some other safety parameters were also taken. To get a complete speed scenario of this road section data were taken on both weekdays and weekends in four different time periods that include Morning-peak, Off-peak, Evening-peak and Night time. Both paired and unpaired T- test analysis was performed taking 90% confidence interval. It is found when comparing between different vehicles that CNG Auto rickshaw and Truck is significant. Vehicle speed varies in the Morning-peak than other time periods in weekdays and in the Evening-peak in the weekends, was found while comparing between different time periods. Again, comparing between different days mainly car, bus and truck were found statically significant. Possible reasons are discussed behind these findings and some Promising measures that demand priority consideration in improving road safety through mitigating the problem of speeding to have a regulated traffic flow are also suggested in this paper.