A Case Retrieval Strategy for Traffic Congestion Based on Cluster Analysis

Table 1

Attributes of traffic congestion cases.

No.	Congestion time	Congestion location	Causes of congestion	Congestion type	Congestion range	Weather	Congestion degree
1.	Morning peak	Trunk road	Normal congestion	Initial congestion	Line	Fine day	Serious
2.	Peak peace	Y-crossing	Sudden congestion	Subsequent congestion	Plane	Heavy rain	Deadlock
3.	Evening peak	T-crossing	Normal congestion	Initial congestion	Point	Fine day	Congestion
……	……	……	……	……	……	……	……
n.	Morning peak	Collector road	Special events	Initial congestion	Line	Light rain	Serious