Temporal instability of truck volume composition on non-truck-involved crash severity using uncorrelated and correlated grouped random parameters binary logit models with space-time variations

• Published in: Analytic methods in accident research Vol. 31; p. 100168
• Main Authors: Fanyu, Meng, Sze, N.N., Cancan, Song, Tiantian, Chen, Yiping, Zeng
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.09.2021
• Subjects: Correlated random parameter; Crash injury severity; Temporal instability; Truck flow; Unobserved heterogeneity; Temporal instability; Truck flow; Crash injury severity; Correlated random parameter; Unobserved heterogeneity

•Temporal instability is found across years when modeling non-truck crashes.•Space-time varying heterogeneity exists in average speed and super-large truck volume.•Heterogeneous effects are correlated in 2016 and 2017–2018.•Different truck types contribute differently to non-truck crash severity. Wi...