In Japan, automation degree of automated driving systems for vehicles such as automobiles is defined as being classified into four levels, from Level 1 to Level 4. Level 1 is called a safe driving assisting system with which any of accelerating, steering, and braking is performed by an automobile. Level 2 is called a quasi-automated-driving system with which a plurality of operations among accelerating, steering, and braking is performed by an automobile. Level 3 is also called a quasi-automated-driving system with which all of accelerating, steering, and braking are performed by an automobile while those are performed by a driver only in a case of emergency. Level 4 is called a completely automated driving system with which all of accelerating, steering, and braking are performed something other than a driver completely without involvement of the driver. Here, an automated driving system represents Level 2 through Level 4 (“strategic innovation program (SIP) automated driving system research and development plan”, Nov. 13, 2014, Cabinet Office, Director-General for Policy Planning, Science Technology and Innovation Department). With reference to the above, in the present specification, automated driving is defined basically to include automated driving at all automation degrees, Level 1 to Level 4, unless otherwise specified.