Ali Tavakoli Kashani
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View article: Aggregate crash prediction model based on gravity model: Introducing crash risk distribution concept
Aggregate crash prediction model based on gravity model: Introducing crash risk distribution concept Open
Crash prediction models (CPMs) can be valuable for future transportation planning decisions. This study aims to develop CPMs based on the trip distribution step of the common four-step demand models. For this purpose, the Gravity Model is …
View article: Feasibility of Estimating Macroscopic Fundamental Diagrams in Iran Traffic Network
Feasibility of Estimating Macroscopic Fundamental Diagrams in Iran Traffic Network Open
The increase in population and economic growth, coupled with accelerated urbanization and suburbanization, has exacerbated traffic congestion and environmental challenges in urban areas. To address these issues, a comprehensive traffic man…
View article: Public Involvement in Transportation Decision Making: A Comparison between Baghdad and Tehran
Public Involvement in Transportation Decision Making: A Comparison between Baghdad and Tehran Open
This study develops an integrated methodology to incorporate public perspectives into the establishment and development of public transportation infrastructure systems. The approach involves surveying citizens to collect data, performing d…
View article: How does the safety performance of different vehicle types and weights affect the severity of a driver’s injury?
How does the safety performance of different vehicle types and weights affect the severity of a driver’s injury? Open
This study explores the impact of vehicle type and weight on occupant protection in fixed-object crashes. The analysis compares these outcomes with rollovers and two-vehicle collisions to further investigate vehicle types' performance. Dat…
View article: Investigation of Factors Associated with Heavy Vehicle Crashes in Iran (Tehran–Qazvin Freeway)
Investigation of Factors Associated with Heavy Vehicle Crashes in Iran (Tehran–Qazvin Freeway) Open
With the growing demand for transportation and cargo between cities, the proportion of heavy vehicles in freeway traffic has been increasing in Iran and worldwide during the past decade. The impact of heavy vehicles on crash severity has l…
View article: Aggregate Crash Prediction Model Based on Gravity Model: Introducing Crash Risk Distribution Concept
Aggregate Crash Prediction Model Based on Gravity Model: Introducing Crash Risk Distribution Concept Open
View article: Influence of Traffic Parameters on the Spatial Distribution of Crashes on a Freeway to Increase Safety
Influence of Traffic Parameters on the Spatial Distribution of Crashes on a Freeway to Increase Safety Open
Significant research has been conducted in recent years to determine crash hotspots. This study focused on the effects of various traffic parameters, including average traffic speed and traffic volume, on the spatial distributions of freew…
View article: Setting research priorities to achieve long-term national road safety goals in Iran
Setting research priorities to achieve long-term national road safety goals in Iran Open
BACKGROUND: Road traffic crashes (RTCs) and its associated injuries are one of the most important public health problems in the world. In Iran, RTCs rank second in terms of mortality. To address this issue, there is a need for research-bas…
View article: Adopting a Safe System Approach to Determine Safer Speed Limits: A Case Study from Iran
Adopting a Safe System Approach to Determine Safer Speed Limits: A Case Study from Iran Open
Speed management is one of the main dimensions of the Safe System Approach for reducing both the risk of crash involvement as well as injury severity. This study proposes a practical framework for setting safer speed limits on duplicated r…
View article: Factors affecting driver injury severity in fatigue and drowsiness accidents: a data mining framework.
Factors affecting driver injury severity in fatigue and drowsiness accidents: a data mining framework. Open
The analysis results revealed motorcycles, lack of using a helmet or seat belt, curvy roads, roads with two-way undivided and one-way movement direction increased the injury and death of drivers. Collision with fixed object, run-off-road, …
View article: The association between lifestyle and aberrant driving behavior among Iranian car drivers
The association between lifestyle and aberrant driving behavior among Iranian car drivers Open
View article: Longitudinal jerk and celeration as measures of safety in bus rapid transit drivers in Tehran
Longitudinal jerk and celeration as measures of safety in bus rapid transit drivers in Tehran Open
Traditionally, analysis of individual differences in road traffic crash risk has relied on after the fact crash data. Nowadays with the help of technologies like GPS, new measures are developed to assess driving risk, inferred from natural…
View article: A new approach in analyzing the accident severity of pedestrian crashes using structural equation modeling
A new approach in analyzing the accident severity of pedestrian crashes using structural equation modeling Open
Present study shows the importance of considering safety improvement measures in highways, educating the people in the society about the traffic safety, the separation of pedestrian and motor vehicle traffic flow and considering the old pe…
View article: Patterns of road traffic fatalities in the six most populous provinces of Iran, 2011–2015
Patterns of road traffic fatalities in the six most populous provinces of Iran, 2011–2015 Open
Background: The aim of this study was to compare the traffic safety condition as well as monthly pattern of fatalities in the six most populated provinces in Iran. Materials and Methods: This was a descriptive study. The data pertaining to…
View article: Explorative Analysis of Motorcyclists' Injury Severity Pattern at a National Level in Iran
Explorative Analysis of Motorcyclists' Injury Severity Pattern at a National Level in Iran Open
Objectives: This study aimed at examining the hidden patterns of motorcycle crashes and riders' injury severity at the national level in Iran. Methods: Hierarchical clustering (HC) and latent class clustering (LCC) techniques were used in …
View article: Identifying Significant Variables Influencing Overtaking Maneuvers on Two-lane, Two-way Rural Roads in Iran
Identifying Significant Variables Influencing Overtaking Maneuvers on Two-lane, Two-way Rural Roads in Iran Open
The main purpose of this study is examining effective and significant variables on overtaking maneuvers on two-lane, two-way rural roads in Iran. In this study, overtaking maneuver type as the response variable was considered in four level…
View article: Modeling the effect of operator and passenger characteristics on the fatality risk of motorcycle crashes
Modeling the effect of operator and passenger characteristics on the fatality risk of motorcycle crashes Open
Preventative measures such as, imposing stricter rules regarding safety helmet usage and confining the number of pillion passengers to one, might be implemented to reduce the fatality risk in motorcycle crashes. In addition, more appropria…