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Mathematical Problems in Engineering

Mathematical Problems in Engineering / 2020 / Article / Tab 4

Research Article

Probability of Roadside Accidents for Curved Sections on Highways

Table 4

Modelling results.
VariableParameter estimateS.E.aS.D.b valueStandard parameter estimate
Horizontal curve radius−0.0330.001141.388<0.05−2.572
Hard shoulder width−2.5270.1080.583<0.05−0.812
Longitudinal slope0.4300.0271.325<0.050.314
Adhesion coefficient−6.6990.2790.224<0.05−0.827
Vehicle speed0.2130.00628.282<0.053.321
Vehicle type−3.6450.1360.5<0.05−1.005
Note. ais standard error. bis standard deviation. indicates 95% confidence level is used (i.e., value <0.05 is statistically significant).

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