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A Thesis submitted to the Department of Civil Engineering, Daffodil International University in partial fulfillment of the requirements for the Degree of

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Habibur Rahman has been accepted as satisfactory in partial fulfillment of the requirements for the degree. This is to certify that the following students, who worked under my direct supervision, completed the project and thesis entitled "IMPACT OF WEATHER ON ROAD ACCIDENT IN BANGLADESH" in part to fulfill the requirements for the degree of Bachelor of Science in Civil Engineering. This work was carried out in the laboratories of the Department of Civil Engineering at the Faculty of Engineering at Daffodil International University.

It is hereby declared that this project and dissertation entitled “WEATHER IMPACT ON ROAD ACCIDENTS IN BANGLADESH” has been carried out by the following students under my direct supervision and this work has been carried out by them in the Department of Civil Engineering, Faculty of Engineering, Daffodil International University in partial fulfillment of the requirements for the degree of Bachelor of Science in Civil Engineering. Otherwise we wouldn't have finished this work. This work would not have been possible without the support and guidance of Ms. Deep Knowledge and the interest of our supervisor in the field of Engineering and who influenced us to conduct this research.

We would like to express our sincere gratitude to all the members of our faculty, Department of Civil Engineering for their great help in completing our thesis and we would also like to thank the staff of CE Department of Daffodil International University. The findings showed that, in most cases, accidents occurred more often when there was a lower amount of precipitation, lower relative humidity and a higher maximum temperature than when there was a higher specific humidity.

Introduction

Problem Statement

Objectives

Scope

Many factors, including speeding and driving while drunk or tired, contribute to traffic accidents. Weather can affect these accidents in Bridgeport and throughout the state of Connecticut. Tables 4.1, 4.2 and 4.3 represent the model information criteria, the results from the likelihood ratio test and the parameter estimates for the Dhaka partition, respectively. Tables and 4.12 represent the model information criteria, the results from the likelihood ratio test, and the parameter estimates for the Khulna partition, respectively.

Tables and 4.15 represent the model information criteria, the results from the likelihood ratio test and the parameter estimates for the Mymensingh partition, respectively. Tables and 4.18 represent the model information criteria, the results from the likelihood ratio test, and the parameter estimates for the Rajshahi partition, respectively. Tables and 4.21 represent the model information criteria, the results from the likelihood ratio test, and the parameter estimates for the Dhaka partition, respectively.

Tables and 4.24 represent the model information criteria, likelihood-ratio test results, and parameter estimates for the Dhaka division, respectively. In Barisal division, accident frequency decreases with the increase in rainfall, relative humidity and maximum temperature.

Literature Review ...................................................................... 3-7

Causes of road accidents

Important ways to avoid accidents

Effects of car accidents

Types of car accidents ...................................................................................... 5-6

Effects of weather conditions

Data Collection and Methodology

Data collection

The Disaster Research Institute (ARI), run by Bangladesh University of Engineering and Technology, provided the information used in this study. The crash reports in the collected dataset covered the study period, which was defined as January 2016 to December 2020. Information on the types of vehicles used in the study was included in the dataset.

The independent variables are precipitation, relative humidity, specific humidity, wind speed, maximum wind speed, minimum wind speed, average temperature, maximum temperature and minimum temperature.

Methodology

Tables 4.4, 4.5, and 4.6 present the model information criteria, likelihood ratio test results, and parameter estimates for the Barisal distribution, respectively. Considering the significance level, we can conclude that precipitation-specific humidity and maximum temperature are negatively correlated with crash frequency, while no positive correlation with any parameter was observed. Tables 4.7, 4.8, and 4.9 present the model information criteria, likelihood ratio test results, and parameter estimates for the Chittagong division, respectively.

Considering the significance level at, we can conclude that relative humidity and maximum temperature are negatively correlated with accident frequency, while specific humidity (0.12866) is positively correlated. Considering the significance level at, we can conclude that only precipitation is negatively correlated with accident frequency, while no positive correlation has been found. Considering the significance level at, we can conclude that only relative humidity is negatively correlated with the accident rate, while specific humidity (0.12868) is positively correlated.

Table 4.2 Loglikelihood ratio tests - Dhaka  Wind at 10m    1.82
Table 4.2 Loglikelihood ratio tests - Dhaka Wind at 10m 1.82

Findings

From a broader perspective, this work is part of a series of studies on the effects of weather on road safety, and helps to understand one of the main factors causing accidents. Such research provides useful information that can be used to create advanced driver assistance systems, which are essential for the acceptance and safety of fully autonomous vehicles. Future research can focus on understanding the hourly effects of weather parameters on crash frequency.

Therefore, it can also be investigated how different driving characteristics give way in collisions in combination with the weather parameters.'. Further, district wise surveys can also be conducted to find out the black spots with high accident frequency. Based on the availability of accident data, a study period from 2016 to 2020 was selected for this study.

However, future research may focus on identifying the critical combinations of these weather variables that are most likely to result in a crash. Development of 3D projection mapping from a moving vehicle to observe from inside and outside the vehicle. When "other people's children" are your own: A multicultural teacher educator learns about difference from the inside out.

17 Distribution and cost of landslides that damaged man-made structures during the 1972-1973 rainy season in the San Francisco Bay region, California. 21 Figure 1: The number of deaths in motor and non-motor vehicle accidents in China from 2007 to 2016. Do you really need back surgery?: A surgeon's guide to neck and back pain and how to choose your treatment.

Database choice matters: A case study in child restraint use and injury patterns using North Carolina motor vehicle traffic accident report and trauma registry data. Multi-Trajectories of Conduct Problems, Hyperactivity/Inattention and Peer Problems across Childhood: Results from the Scottish Birth Cohort. Wear a woman's dress to preserve your virginity." In Marriage Symbolism in Early Christianity and the Latin Middle Ages.

Conclusion

Recommendation

Limitation

Gambar

Table 4.3 Parameter Estimates - Dhaka
Table 4.2 Loglikelihood ratio tests - Dhaka  Wind at 10m    1.82
Table  4.4  Model  Info  -  Barisal
Table 4.6 Parameter Estimates - Barisal
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