Abstract: A device for controlling in-vehicle signage is disposed to provide a physical indication of a particular in-vehicle sign. The data defining the particular sign is associated with data defining a trigger point for causing the occurrence of the indication of the particular sign. The device is adapted for control by a processor that is responsive to a conflict between the particular sign and at least one of another sign or a message and is disposed to alter the data defining the trigger point to remove the conflict. The trigger point is defined by the intersection of the path of a vehicle and a trigger zone extending spatially from a defined location of the particular sign.