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

Table 6

Validation of proposed CA model.

Statistics		Sites						Overall
		1	2	3	4	5	6
Average velocity (m/s)	Observation	1.35	1.3	1.39	1.45	1.38	1.44
	Simulation	1.33	1.28	1.45	1.44	1.42	1.44
	Error	−1%	−2%	4%	−1%	3%	0%	1%
Average velocity during last 10 s of green-man signal (m/s)	Observation	1.36	1.31	1.41	1.48	1.42	1.46
	Simulation	1.38	1.31	1.43	1.47	1.44	1.45
	Error	1%	0%	1%	−1%	1%	−1%	0%