The phrase "occupant compartment" refers to the interior space or area inside a vehicle where the passengers sit. It represents the designated area for individuals who are riding in the vehicle. Full definition
The majority of the cars had lots of occupant compartment intrusion, which contributed to their low overall rating. (iihs.org)
The sedan's occupant compartment held up better than any of the other cars. (iihs.org)
Beginning with the 2018 model year, the front - end and occupant compartment structure was reinforced to improve occupant protection in passenger - side small overlap crash tests. (iihs.org)