Final answer:
Convoying is the term for tailgating with permission, and it is a planned activity among multiple vehicles, commonly for mutual support.
Step-by-step explanation:
Tailgating with the permission of the person being followed is known as convoying. This term is typically used to describe a group of vehicles traveling closely together, often for mutual support or protection.
While tailgating generally has negative connotations, such as following another car too closely without permission, which can be dangerous, convoying implies a coordinated effort where each driver in the group is aware and has agreed to this arrangement. It's a practice that might be seen among trucks on a highway, cars on a road trip, or in a military context.
Tailgating with the permission of the person being followed is known as piggybacking. This term is commonly used in the field of computer networking, specifically in the context of wireless network security. It refers to the unauthorized access to a wireless network by someone who is in close proximity to the network's authorized user, with their permission.