Research on Analysis Method of Traffic Congestion Mechanism Based on Improved Cell Transmission Model

Table 1

Parameter definition of model.

Parameter	Ordinary cell	Oriented cell
Density	𝜌^𝑖𝑎(𝑘)	𝜌^𝜉𝑎(𝑘)
Vehicles	𝑛^𝑖𝑎(𝑘)	𝑛^𝜉𝑎(𝑘)
Inflow rate	𝑞^𝑖𝑎(𝑘)	𝑞^𝜉𝑎(𝑘)
Inflow	𝑦^𝑖𝑎(𝑘)	𝑦^𝜉𝑎(𝑘)
Max. outflow	𝑞^𝑖,max𝑎(𝑘)	𝑞𝑎^𝜉,max(𝑘)
Max. inflow	𝑄^𝑖𝑎(𝑘)	𝑄^𝜉𝑎(𝑘)
Capacity	𝑁^𝑖𝑎(𝑘)	𝑁^𝜉𝑎(𝑘)