Estimating Safety Effects of Green-Man Countdown Devices at Signalized Pedestrian Crosswalk Based on Cellular Automata

Table 5

Results of the estimated parameters for each independent variable.

Variables	Estimate	Correlation coefficient	Standard error	value
Whether it is a GMCD crosswalk	−0.17	0.40	0.216	0.001
Pedestrian volume	0.91	0.21	0.024	0.002
Vehicle volume	−0.64	−0.63	0.016	0.0057
Time to onset of red man	0.42	0.37	0.025	0.0103