Research on support technology of freeway emergency decision system

Aimed at the problem that freeway operational department can´t deal with emergency traffic accident appropriately, classes of traffic incident was proposed, combining with freeway traffic characteristics, main contents and support technology of freeway emergency decision system was set forth, including data warehouse design, model warehouse design, knowledge warehouse design, On-Line Analysis Processing, based on these technologies, combining with freeway operational system, freeway emergency decision process was put forward.