Adaptive neural network models for automatic incident detection on freeways

Authors:
Dipti Srinivasan;Xin Jin;Ruey Long Cheu
Affiliations:
Department of Electrical and Computer Engineering, National University of Singapore, 10 Kent Ridge Crescent, Singapore 119260, Republic of Singapore;Department of Civil Engineering, National University of Singapore 4, Engineering Drive 3, Singapore 117576, Republic of Singapore;Department of Civil Engineering, National University of Singapore 4, Engineering Drive 3, Singapore 117576, Republic of Singapore
Venue:
Neurocomputing
Year:
2005

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Abstract

Automated incident detection (AID) is an essential component of an Advanced Traffic Management and Information Systems (ATMIS), which provides round the clock incident detection, and helps initiate the required action in case of an accident or incident. This paper evaluates three promising neural network models: multi-layer feed-forward neural network (MLF), basic probabilistic neural network (BPNN) and constructive probabilistic neural network (CPNN) for their incident detection performance. An important consideration in neural network-based incident detection systems is the deployment of a trained neural network on traffic systems with considerably different driving conditions. The models were developed and tested on an original freeway site in Singapore, and tested on a new freeway site in the US for their adaptability. The paper presents comparative evaluation in terms of their classification accuracy, adaptability, and network size. Results indicate that although the MLF model gives excellent classification results on the development site, the CPNN model outperforms the other two in terms of its adaptability and flexible structure. The results suggest that CPNN model has the highest potential for use in an operational automatic incident detection system for freeways.