Control device, system, vehicle and control method

The invention provides a control device, a system, a vehicle and a control method. A control device is provided with a control unit that sets a target speed on the basis of the average speed of at least one first vehicle among a plurality of vehicles included in a train, and outputs instruction data for instructing the set target speed to a second vehicle, which is one of the plurality of vehicles (12). The speed of the second vehicle after the output of the instruction data is compared with the target speed, and whether to give incentives to the user of the second vehicle is determined based on the comparison result. 提供一种控制装置、系统、车辆和控制方法。控制装置具备控制部，该控制部根据在车列中所包含的多个车辆之中的至少一台第一车辆的平均速度来设定目标速度，输出将设定的目标速度指示给作为多个车辆(12)之中的一台的第二车辆的指示数据，比较输出指示数据后的第二车辆的速度和目标速度，基于比较的结果决定是否对第二车辆的用户给予激励。