Operational Risk Analysis of Left Hard Shoulder on Multi-lane Highways Using Panel Models
As multi-lane highways become more prevalent,the installation of left-side hard shoulders has emerged as a pressing issue for discussion.Currently,the risks associated with vehicles entering the left-side hard shoulder have not been thoroughly examined concerning their implications for the main traffic flow.Recognizing the spatiotemporal nature of these risks,a panel model is constructed and a lane-specific risk analysis approach is introduced based on operational data.This method calculates the operational risk associated with vehicles entering the left-side hard shoulder and compares it with the risk profile for vehicles entering the right-side hard shoulder for stopping.The research findings indicate that the provision of left hard shoulders can significantly reduce the operational risks during vehicle stopping processes.However,during the initial phase of vehicle stopping,the provision of left hard shoulders can lead to a short-term increase in operational risks.The research outcomes in this paper provide an objective assessment framework for the decision to implement left-side hard shoulders on multi-lane highways,offering valuable guidance for the design of risk management measures pertaining to the left-side hard shoulder.
Left-side hard shoulderOperational risk analysisPanel modelMulti-lane highwaysSpatiotemporal risk characteristics
万方数据
维普
