1-s2.0-S235214651930496X-main.pdf (504.59 kB)
Download file

Exploring crash injury severity on urban motorways by applying finite mixture models

Download (504.59 kB)
conference contribution
posted on 01.04.2021, 11:24 authored by Athanasios Theofilatos, George Yannis
The effective treatment of crashes is a major concern to societies due to losses in human lives and the economic and social costs. Crash injury severity is one of the most well-known and well researched aspects of crashes in the science of road safety, with many study types across different countries and sample frames. All types of severity analyses primarily aim to determine the contributing factors for increased crash or injury severity and the respective degree of said contributions. Usually, driver and passenger-related factors are examined, as well as road environment characteristics such as geometric design aspects, traffic conditions, vehicle type and technology and weather conditions, as investigated in past literature. However, crash injury severity has not been adequately explored as the majority of relative research has a focus on analyzing crash likelihood, i.e. The probability of a crash to occur. Thus, this study aims to add to current knowledge by examining the determinants behind injury severity of occupants involved in crashes in the urban motorway Attica Tollway ('Attiki odos') which lies in the Greater Athens Area in Greece. In order to account or the unobserved heterogeneity, crash injury severity is explored by utilizing finite mixture logit models. Results indicate that a number of traffic parameters such as truck proportion, average flow and standard deviation of occupancy, as well as other risk factors, such as accident type and engine size have a significant effect on the injury severity outcome of vehicle occupants. Moreover, this model accounted for the heterogeneity among two distinct groups of observations. More research is needed in order to incorporate also vulnerable road users such as motorcyclists, cyclists and pedestrians and further investigate the impact of real-time traffic and weather parameters.

Funding

This research is implemented through IKY scholarships programme and co-financed by the European Union (European Social Fund - ESF) and Greek national funds through the action entitled ”Reinforcement of Postdoctoral Researchers”, in the framework of the Operational Programme ”Human Resources Development Program, Education and Lifelong Learning” of the National Strategic Reference Framework (NSRF) 2014 – 2020.

History

School

  • Architecture, Building and Civil Engineering

Published in

Transportation Research Procedia

Volume

41

Pages

480 - 487

Source

International Scientific Conference on Mobility and Transport - "Urban Mobility - Shaping the Future Together" mobil.TUM 2018

Publisher

Elsevier

Version

VoR (Version of Record)

Rights holder

© The Authors

Publisher statement

This is an Open Access Article. It is published by Elsevier under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Licence (CC BY-NC-ND 4.0). Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Acceptance date

28/11/2019

Publication date

2019-11-28

Copyright date

2019

ISSN

2352-1465

eISSN

2352-1465

Language

en

Editor(s)

Constantinos Antoniou; Fritz Busch; Rolf Moeckel; Gebhard Wulfhorst; Maximilian Pfertner

Location

Munich, Germany

Event dates

13th June 2018 - 14th June 2018

Depositor

Dr Akis Theofilatos. Deposit date: 29 March 2021