Remote support system and mobile body

A mobile body that is remotely supported based on a control signal that is wirelessly transmitted from a mobile terminal operated by an operator, wherein:

• a safety device detachable from the mobile terminal, being physically connected to the mobile terminal during remote support of the mobile body and exchanging diagnostic signals with the mobile body via the mobile terminal, the safety device receiving a first diagnostic signal among the diagnostic signals from the mobile body via the mobile terminal, generating a second diagnostic signal among the diagnostic signals in response to receipt of the first diagnostic signal, and transmitting the second diagnostic signal to the mobile body via the mobile terminal;
• the mobile body includes one or more processors;
• and
• the one or more processors are configured to
• transmit the first diagnostic signal to the safety device via the mobile terminal,
• receive the second diagnostic signal from the safety device via the mobile terminal,
• determine whether an abnormality is present based on the second diagnostic signal,
• execute traveling control based on the control signal from the mobile terminal in response to the abnormality not being detected from the second diagnostic signal, and
• not execute the traveling control in response to the abnormality being detected.