|Table of Contents|

Analyzing risk factors for taxi accidents considering spatial aggregation characteristics(PDF)

长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2023年5期
Page:
99-106
Research Field:
交通工程
Publishing date:

Info

Title:
Analyzing risk factors for taxi accidents considering spatial aggregation characteristics
Author(s):
WANG Yong-gang1; 2;  LIU Xiao-hu1;  ZHANG Heng1
(1. School of Transportation Engineering, Chang'an University, Xi'an 710018, Shaanxi, China; 2. Key Laboratory of Transport Industry of Management, Control and Cycle Repair Technology for Traffic Network Facilities in Ecological Security Barrier Area, Cha
Keywords:
traffic engineering;  taxi accident rate;  spatial weight matrix;  Bayesian conditional auto-regression;  influencing factor
PACS:
U491.31
DOI:
10.19721/j.cnki.1671-8879.2023.05.010
Abstract:
In order to effectively identify the causes of taxi involved traffic accident, the Chicago city was divided into 77 traffic zones as the basic research unit, and the data of each traffic zone during the period of the year 2016 to 2018 were collected, including taxi accidents, taxi travel OD, population distribution, economic and social development, land use properties, and road infrastructures. To reflect the spatial impact effect of a certain traffic zone on other zones, a Bayesian residual term was introduced. A spatial weight matrix was constructed using taxi travel connections between zones as a substitute for geographical distance, and the global spatial Moran's index was used to test the spatial autocorrelation of taxi accident rates between different traffic zones. And a Bayesian conditional autoregressive model was proposed to identify the significant factors influencing taxi accident rates. The results show that there is a significant spatial positive correlation in taxi accident rate within the study area. The number of taxi trips, average trip duration, and the ratio of taxi drop-offs within traffic zones are three key influencing factors that have a significant positive correlation with taxi accident rate, with the taxi drop-off ratio having the greatest impact. Additionally, taxi accident rate is positively correlated with population density, proportion of commercial land, number of landmark buildings, road network density, number of intersections, and number of bus stops within the traffic zones. On the other hand, it is negatively correlated with the proportion of population under 18 and over 64 years old, as well as the proportion of industrial land use.2 tabs, 2 figs, 25 refs.

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Last Update: 2023-10-10