Message set and a messaging method for vehicular communication

A message set (1) for vehicular communication, said message set comprising a message header (11) and a message content (12),

• wherein said message set is set to be sent by a source vehicle (2) after one or more portion of said message set being encrypted, forwarded by one or more relay vehicles (3) and received by a terminal device (4, 5),
• wherein said message header comprises:
• a relay information indicator (111) that indicates whether said message set should be forwarded by said relay vehicle receiving said message set,
• a vehicle information indicator (112) that identifies said source vehicle to distinguish said message set from said source vehicle from a message set from another source vehicle,
• a payment information indicator (113) that indicates available payment information for said source vehicle,
• a terminal type indicator (114) that indicates the type of said terminal device for receiving said message set, and
• a location information indicator (115) that indicates one or more geographic coordinates of said source vehicle when sending out said message set.