@article{ref1,
title="Integrating macro- and micro-level safety analyses: a Bayesian approach incorporating spatial interaction",
journal="Transportmetrica A: transport science",
year="2019",
author="Cai, Qing and Abdel-Aty, Mohamed and Lee, Jaeyoung and Huang, Helai",
volume="15",
number="2",
pages="285-306",
abstract="Traditionally, crash frequency analyses have been undertaken at the macro- and micro-levels, independently. This study proposes a Bayesian integrated spatial crash frequency model, which links the crash counts of macro- and micro-levels based on the spatial interaction. In addition, the proposed model considers the spatial autocorrelation of the different types of road entities (i.e. segments and intersections) at the micro-level with a joint structure. The modelling results indicated that the integrated model can provide better model performance for estimating macro- and micro-level crash counts, which validates the concept of integrating the models for the two levels. Also, the integrated model could simultaneously identify both macro- and micro-level factors contributing to the crash occurrence. Subsequently, a novel hotspot identification method was suggested, which enables us to detect hotspots for both macro- and micro-levels with comprehensive information from the two levels.<p /> <p>Language: en</p>",
language="en",
issn="2324-9935",
doi="10.1080/23249935.2018.1471752",
url="http://dx.doi.org/10.1080/23249935.2018.1471752"
}