Who is job Is it to speak up if the driver of the apparatus moves it prior to all members being in seatbelts?

It is the responsibility of the officer or designated safety officer on the apparatus to ensure that all members are properly secured with seatbelts before the vehicle is moved. This person should communicate clearly with the driver to halt movement until everyone is safely strapped in. Additionally, all crew members should feel empowered to speak up if they notice safety protocols are not being followed. Prioritizing safety is a collective responsibility.