Expected effects of accident data recording technology evolution on the identification of accident causes and liability

European Transport Research Review

An Open Access Journal

Table 6 Groupwise comparison of the assessability of accident types for various data recording technologies—the p values of the Kruskal–Wallis Test—values below the significance level are indicated with an asterisk (*)

Accident type pairs	1. p-value T₀	2. p-value T₁	3. p-value T₂
x₁–x₂	0.08912	0.8055	0.00482*
x₁–x₃	0.6153	0.6777	7.9E-05*
x₁–x₄	0.2141	0.6221	0.1551
x₁–x₅	0.05644	0.04283	0.00386*
x₁–x₆	0.08328	0.8381	0.002*
x₁–x₇	0.06371	0.03524	0.3315
x₂–x₃	0.01947	0.2682	NaN
x₂–x₄	0.8842	0.7592	0.1888
x₂–x₅	0.2987	0.03554	NaN
x₂–x₆	0.4851	0.4917	NaN
x₂–x₇	0.2894	0.01461	0.09945
x₃–x₄	0.07346	0.1865	0.06308
x₃–x₅	0.00129*	0.00042*	NaN
x₃–x₆	0.04488	0.7461	NaN
x₃–x₇	0.00538*	0.00082*	0.01981
x₄–x₅	0.5128	0.06554	0.1775
x₄–x₆	0.5055	0.3517	0.1482
x₄–x₇	0.6038	0.01463	0.7397
x₅–x₆	0.07678	0.00477*	NaN
x₅–x₇	1	0.02732	0.09097
x₆–x₇	0.06393	0.00545*	0.06989
α_corr	0.007143