Federal Regulations Require Roof Crush Resistance To Be

This standard establishes strength requirements for the passenger compartment roof.

Federal regulations require roof crush resistance to be. 49 cfr parts 571 and 585216 as part of a comprehensive plan for reducing the risk of rollover crashes and the risk of death and serious injury in those crashes this final rule upgrades the agency s safety standard on roof crush resistance in several ways. Roof crush resistance 222 13 kb final rule. It has long been taken for granted that roof crush is directly and causally related to occupant injury. The purpose of this standard is to reduce deaths and injuries due to the crushing of the roof into the occupant compartment in rollover crashes.

This standard establishes strength requirements for the passenger compartment roof. Roof crush resistance the text of this document is based on federal motor vehicle. 571 216a standard no. The number of occupant injuries is significantly higher.

216a roof crush resistance as published in. The nprm reflected comments received in response to a request for comments rfc published in the federal register 66 fr 53376 on october 22 2001 and research and testing conducted prior to the. Given the requirements of safetea lu we need to ensure that the standard results in improved real world roof crush resistance for these vehicles. Roof crush is the failure and displacement of an automobile roof into the passenger compartment during a rollover accident.

On august 23 2005 nhtsa published in the federal register 70 fr 49223 a nprm to upgrade fmvss no. The relationship between injury levels and intrusion or roof crush has. The united states code of federal regulations title 49 part 571 revised as of may 12 2009 as well as the final rule correcting amendment published in the federal register on wednesday. It is envisaged that the roof is.

Supplemental notice of proposed rulemaking snprm. This standard established strength requirements for the roof structure over the front occupants of passenger cars with a gross vehicle weight rating gvwr of 6 000 pounds or less. Federal motor vehicle safety standards. S5 1 when the test device described in s6 is used to apply a force to a vehicle s roof in accordance with s7 first to one side of the roof and then to the other side of the roof.

216 roof crush resistance. Federal motor vehicle safety standard fmvss no. We decline however to adopt a swr higher than 1 5 for vehicles with a gvwr greater than 2 722 kilograms 6 000 pounds given the small additional benefits 4 additional lives saved and. A the lower surface of the test device must not move more than 127 millimeters and.

Every year approximately 10 000 americans are killed in rollover accidents accounting for about 30 of all light vehicle occupant fatalities.