Vehicle following risk assessment method and device and vehicle

The invention provides a vehicle following risk assessment method and device and a vehicle. The vehicle following risk assessment method includes the following steps that a deceleration probability density function of a front vehicle is obtained; the current vehicle speed of the current vehicle, the current vehicle speed of the front vehicle, the acceleration of the current vehicle and the distance between vehicle heads are obtained; the deceleration interval of the front vehicle is determined when a collision is likely to happen according to the current vehicle speed of the current vehicle, the current vehicle speed of the front vehicle, the acceleration of the current vehicle and the distance between the vehicle heads; and the single vehicle rear-end collision accident probability is generated according to the acceleration interval and the deceleration probability density function. By the adoption of the vehicle following risk assessment method, analyses of risk factors of collisions caused by various collision reasons and having various collision characteristics are superposed, the method is more comprehensive, the judgment standard is expanded to the displacement of the whole braking process from the parking distance, the safe distances at different vehicle speeds can be determined, a control foundation is laid for anti-collision control over the vehicle, and the assessment accuracy is higher.