Patent ID: 6360171
Filing Date: 2002-03-19
Classification: G08G

Abstract:
A bumping prevention system for preventing bumping between a vehicle running on a non-priority road and another vehicle running on a priority road at a crossing between the two roads by transacting signals with on-road infrastructure in a service area from a fixed point information detection support facility for service-in installed at a point away by a specified distance from the crossing up to a fixed point information detection support facility for service-out installed at a point near the crossing, wherein, when a vehicle passes by the fixed point information detection support facility for service-in and enters the service area, a driver of the vehicle receives a signal indicating start of the service area from the support facility and recognizes availability of the services for provision of information, alarms, and controls for prevention of bumping when approaching the crossing, said system starts computing a position of the vehicle by grasping a distance from a current position of the vehicle up to the priority road, acquires information on vehicles on the priority road from the on-road infrastructure, provides information the vehicle's driver with information concerning presence of the crossing as well as of vehicles entering the crossing at a point where the driver can brake the vehicle with sufficient time allowance for stopping the vehicle in front of the crossing when there is any vehicle entering the crossing on the priority road, gives an alarm alerting the possibility of bumping at a position where the driver can brake the vehicle in an emergency with sufficient time allowance for stopping the vehicle in front of the crossing when it is determined that there is the possibility of bumping with a vehicle entering the crossing, and continuously provides controls for support for braking in a range from the position where the driver can brake the vehicle in an emergency with sufficient time allowance for stopping the vehicle in front of the crossing up to a position in front of the crossing.