The Effects of Vehicle Speeds on Accident Frequency within Settlements along Trunk Roads
Journal Title: International Journal of Modern Engineering Research (IJMER) - Year 2015, Vol 5, Issue 1
Abstract
Literature provides overwhelming evidence that a strong relationship exist between vehicle speed and accident risk, and an outcome severity in the event of an accident. Excessive speed is said to be a major causal factor of road accidents on trunk roads; contributing 60% of all vehicular accidents. However, speed rationalization measures implemented on a number of trunk roads in Ghana have realized very little success. This study therefore investigated the effects of vehicle speeds on accident frequency within settlements along trunk roads. Data was collected on accidents, vehicle speeds and other road and environment-related features for ninety-nine (99) settlements delineated from four (4) trunk roads. Correlation analysis was employed to establish useful relationships and provided insight into the contributions of relevant road and environmental-related variables to the occurrence of road traffic accidents. Using the Negative Binomial error structure within the Generalized Linear Model framework, core (flow-based) models were formulated based on accident data and exposure variables (vehicle mileage, daily pedestrian flow and travel speed). Incremental addition of relevant explanatory variables further expanded the core models into comprehensive models. Findings indicate the main risk factors are number of accesses, daily pedestrian flow and total vehicle kilometers driven, as vehicle speed did not appear to influence the occurrence of road traffic accidents within settlements along trunk roads. In settlement corridors, mitigating accident risks should not focus only on traffic calming but rather on measures that reduce pedestrian and vehicular conflict situations as well as improve conspicuity around junctions.
Authors and Affiliations
Daniel Atuah Obeng
Keywords
Related Articles
- EP ID EP111069
- DOI -
- Views 100
- Downloads 0
Effect of Turbo charging On Volumetric Efficiency in an Insulated Di Diesel Engine For Improved Performance
Abstract: The world’s rapidly dwindling petroleum supplies, their raising cost and the growing danger of environmental pollution from these fuels have led to an intensive search for an alternative fuels with concer...
Properties of Glass Fibre Reinforced Geopolymer Concrete
This paper presents results of an experimental program to determine mechanical properties of Glass fibre reinforced Geopolymer Concrete which contains fly ash, alkaline liquids, fine & course aggregates & g...
Sustainable Development Using Supplementary Cementitious Materials and Recycled Aggregate
Concrete is the most widely used construction material worldwide.But this popularity of concrete also carries with it a great environmental cost. The billions and billions tons of natural materials are mined and...
Remote Monitoring of Crop Field Using Wireless Sensor Network
This paper presents the design and implementation of wireless sensor network that can monitor the air temperature, Humidity, light intensity in a crop field and from remote places also. The system consists of nod...
Experimental Study of the Parameters Affecting the Tribological Performance of Nano Lubricant Containing Multi-Walled Carbon Nano-tubes (MWCNT) using Design of Experiments (DOE)
The Multi-Walled Carbon Nano-Tubes (MWCNT) are gaining wide acceptability as an anti-wear lubricant additive because of their extraordinary tribological properties. However, full antiwear potential of the MWCNT...