New full velocity difference model considering the driver’s heterogeneity of the disturbance risk preference for car-following theory

摘要: This paper proposes a new full velocity difference model considering the driver’s heterogeneity of disturbance risk preference for car-following theory to investigate effects on traffic flow instability when driver reacts relative velocity. We obtain condition and calculation method unstable region headway range probability congestion caused by small disturbance. The analysis shows that has important instability: (1) is independent absolute size coefficient depends ratio preceding vehicle following coefficient; (2) smaller coefficient, vice versa. It provides some viable ideas suppress congestion.