8McGuigan, D. R. D. The Use of Relationships Between Road Acci- dents and Traffic Flow in Black-spot Identification [ J]. Traffic Engi- neering and Control, 1981,22(8) :448 -453.
9Dia HRG. Development and Evaluation of Neural Network Freeway Incident Detection Models Using Field data[ J]. Transportation Re- search Board Part C, 1997,5:313 - 331.
10Bared J G,Edara P K, Kim T. Safety impact of inter- change spacing on urban freeways [R]. Washington DC : Transportation Research Board, 2006.
