An Analysis of the Catastrophe Model and Catastrophe Characteristics of Traffic Flow Based on Cusp Catastrophe Theory

Table 3

Relationship between system solution and system state.

Δ value	Number of system solutions	Correspondence with bifurcation set B in Figure 7.	Status of the system
Δ>	1	Area A1, A4	Stable
Δ = 0	—	Curves L1, L2	Critical stable
Δ < 0	3	Area A2, A3	Unstable