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 110
- Downloads 0
Optimization of Multi Leaf Spring by using Design of Experiments & Simulated Annealing Algorithm
This work carried out on a multi leaf spring of a tractor trolley with maximum load carrying capacity of 5 Tones. The CAD model of this MLS has been modeled in CATIA V5. After successfully preparing the CAD mod...
Voice over IP (VOIP) Security Research- A Research
This is a work based on a survey of Voice over IP security research.Goal is to provide a roadmap for researchers seeking to understand existing capabilities and, and to identify gaps in addressing the numerous threats...
Absorption of Nitrogen Dioxide into Sodium Carbonate Solution in Packed Column
Absorption of nitrogen dioxide (NO2) gas from (NO2/Air or NO2/N2) gas mixture into sodium carbonate (Na2CO3) alkaline solution was performed using packed column in pilot scale. The aim of the study was to improve the Abs...
Design of Coaxial Rotor Micro Air Vehicle
The main objective of this paper is the systematic description of the current research and development of small or miniature unmanned aerial vehicles and micro aerial vehicles, with a focus on rotary wing vehicles. I...
Evaluation of Tensile and Flexural Properties of Polymer Matrix Composites
The work presented in this project is to evaluate tensile and flexural properties of Glass, Graphite and Kevlar fiber reinforced polymer matrix composites. Behaviour of different fibre-reinforced composite material...