Modeling and Analysis of Train Rear-End Collision Accidents Based on Stochastic Petri Nets

Table 2

Crisp number and triangular number of the firing rate .

	Crisp number	Spread	Triangular fuzzy number
	10	±20%	(8, 10, 12)
	4	±15%	(3.4, 4, 4.6)
	2	±10%	(1.8, 2, 2.2)
	1	±5%	(0.95, 1, 1.05)