Analysis of Driver Decisions at the Onset of Yellow at Signalized Intersections

Table 2

Descriptive statistics for continuous variables in the dataset.

Variables	Min.	Max.	Mean	Std. dev.
Speed at the stop line (m/s)	0.09	23.17	6.79	7.25
Speed at the onset of red signal (m/s)	0	23.26	8.10	6.71
Speed at the onset of yellow signal (m/s)	11.00	24.12	19.01	2.24
Distance to stop line at the onset of yellow signal (m)	33.49	86.76	62.22	10.20
Time to stop line at the onset of yellow signal (s)	2.48	3.81	3.27	0.38
Yellow signal duration (s)	2.78	4.08	4.00	0.22
Average acceleration rate (m/s^2)	−7.13	3.33	−1.37	1.95