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

Table 6

Road traffic flow status.

Time	Speed (km/h)	Flow q (pcu/h)	Position in equilibrium surface	Traffic flow status	Road traffic state
6 : 30	56.52	503	Upper lobe	Stable	Smooth flow
6 : 45	45.39	890	Upper lobe	Stable	Smooth flow
7 : 00	41.68	1856	Upper lobe	Stable	Stable flow
7 : 15	38.52	2030	Fold	Critical stable	Slight congestion
7 : 30	28.74	2210	Middle lobe	Unstable	Congested flow
7 : 45	20.65	2190	Middle lobe	Unstable	Congested flow
8 : 00	34.82	1970	Fold	Critical stable	Congested flow
8 : 15	39.97	2120	Lower lobe	Stable	Stable flow
8 : 45	42.15	2010	Lower lobe	Stable	Stable flow
9 : 00	54.26	1690	Upper lobe	Stable	Smooth flow