Roof Crush Resistance Upgraded Standard
This standard applies to passenger cars, and to multipurpose passenger vehicles, trucks and buses with a GVWR of 4,536 kilograms (10,000 pounds) or less. It does not apply to (1) school buses, (2) vehicles that conform to rollover test requirements of Section 5.3 of FMVSS 208 by means that require no action by vehicle occupants; (3) convertibles, except for optional compliance with the standard as an alternative to the rollover test requirements of Section 5.3 of FMVSS 208, or (4) trucks built in two or more stages with a GVWR greater than 2,722 kilograms (6,000 pounds) not built using a chassis-cab or using an incomplete vehicle with a full exterior van body.
At the option of the manufacturer, vehicles within either of the following categories may comply with the roof crush requirements of Section 4 of FMVSS 220 instead of the requirements of this standard
(1) Vehicles built in two or more stages, other than vehicles built using a chassis-cab
(2) Vehicles with a GVWR greater than 2,722 kilograms (6,000 pounds) that have an altered roof