Applying Clustered KNN Algorithm for Short-Term Travel Speed Prediction and Reduced Speed Detection on Urban Arterial Road Work Zones

Table 3

Field items of urban traffic information system (UTIS) data.

Field name	Description	Field name	Description
INCIDENTID	Event ID	TROUBLEGRADE	Event grade
LINKID	Link ID	INCIDENTTITLE	Event title
STARTDATE	Start date	INCIDENTINFO	Event information
ENDDATE	End date	INCIDENTCODE	Event type
COORDX	Longitude	INCIDENTSUBCODE	Event subtype
COORDY	Latitude	LOCATION	Address