Interpretation ID: nht92-2.5

DATE: 11/25/92

FROM: PAUL JACKSON RICE -- CHIEF COUNSEL, NHTSA

TO: M. FRANCES PARTON

ATTACHMT: ATTACHED TO LETTER DATED 10-7-92 FROM M. FRANCES PARTON TO JACK RICE (OCC 7913)

TEXT: This responds to your letter of October 7, 1992, requesting information on whether a 1992 van can be modified by installing swivel bases on the seats so that you can transfer from the seat to a wheelchair. It is unclear from your letter whether the seat you want modified is a front or a rear seat. As explained below, there is no federal requirement that expressly prohibits installing a swivel base on a seat, provided that the seats and belts continue to comply with the applicable safety standards.

Some background information on Federal motor vehicle safety laws and regulations may be helpful. Section 103 of the National Traffic and Motor Vehicle Safety Act (the Safety Act; 15 U.S.C. 1392) authorizes NHTSA to issue Federal Motor Vehicle Safety Standards for new motor vehicles and new items of motor vehicle equipment. Manufacturers are required to certify that their products meet all applicable safety standards.

Any manufacturer, distributor, dealer, or repair business that modifies a van for you along the lines described in your letter after you have purchased the van would be subject to the requirement of the Safety Act (at 15 U.S.C. 1397(a)(2)(A)) that:

No manufacturer, distributor, dealer, or motor vehicle repair business shall knowingly render inoperative, in whole or in part, any device or element of design installed on or in a motor vehicle . . . in compliance with an applicable Federal motor vehicle safety standard.

Since the seats and their safety belts are devices or elements of design installed in the van in compliance with applicable safety standards, this section prohibits any of the named commercial entities from making any modification or repair to the seats and/or their accompanying safety belts if such modification or repair would cause the vehicle no longer to comply with an applicable safety standard.

Adding a swivel base to a seat, and presumably moving the seat belts for the seat, could affect compliance with four safety standards: Standard No. 207, Seating Systems, Standard No. 208, Occupant Crash Protection, Standard No. 209, Seat Belt Assemblies, and Standard No. 210, Seat Belt Assembly Anchorages. Standard No. 207 establishes strength and other performance requirements for vehicle seats. Standard No. 208 sets forth requirements for occupant protection at the various seating positions in vehicles. Based upon the information in your letter, it appears that the vehicle you wish to have modified would be classified as a multipurpose passenger vehicle (MPV) for purposes of NHTSA's regulations. Standard No. 208 requires an MPV to provide occupant crash protection to belted front seat occupants when the vehicle is crash tested at 30 miles per hour (mph) into a concrete barrier. Standard No. 208 also requires an MPV to have a lap/shoulder belt at every rear outboard seating position, and either a lap belt or a lap/shoulder belt at every other rear seating position. Standard No. 209 sets forth strength, elongation, webbing width, durability, and other requirements for seat belt assemblies. Standard No. 210 establishes strength and location requirements for seat belt anchorages.

As you can see, with the exception discussed below, there is nothing in Federal law that prohibits persons from adding a swivel base to a seat. Instead, Federal law requires that modifications to a van that include adding a swivel base to a seat be done in such a way that the seats and safety belts continue to provide the safety protection mandated by the safety standards.

With respect to Standard No. 208's requirements for front seats, NHTSA has recently received a number of phone calls and letters, from van converters and individuals, suggesting that the crash testing requirement for front seats in MPVs will, in effect, prohibit van converters from modifying vehicles to accommodate the special needs of persons in wheelchairs. The agency has also received a petition from the Recreation Vehicle Industry Association (RVIA) requesting an amendment to the light truck and van crash test requirement "to eliminate requirements that inadvertently discriminate against individuals with disabilities including individuals who use wheelchairs."

On January 9, 1992, the agency granted the RVIA petition. On August 5, 1992, the agency issued a notice of proposed rulemaking (NPRM) to amend the requirements of Standard No. 208 to give manufacturers of certain light trucks and vans the option of installing non-dynamically tested manual safety belts instead of complying with the dynamic testing requirements. However, the agency is aware that you and others who need to purchase a new vehicle need more immediate relief than a rulemaking can offer. Therefore, as explained in the NPRM, the agency has stated that it will not conduct any dynamic testing under Standard No. 208 of vehicles modified for operation by persons with disabilities while this rulemaking is pending. If you need to have the swivel base added to a front seat, this should allow you to find a converter to make this modification while this decision is pending.

I hope you find this information helpful. If you have any other questions, please contact Mary Versailles of my staff at this address or by phone at (202) 366-2992.