Interpretation ID: 7058
King & Spalding
191 Peachtree Street
Atlanta, GA 30303-1763
Dear Mr. McLean:
This responds to your March 9, 1992 letter, seeking an interpretation of Standards No. 208, Occupant Crash Protection and No. 209, Seat Belt Assemblies (49 CFR 571.208 and 571.209, respectively). More specifically, you were interested in how certain provisions of these standards apply to a seating position equipped with an automatic shoulder belt certified as complying with the occupant protection requirements of Standard No. 208 and a separate manual lap belt. Your letter indicated you were particularly interested in whether the automatic belt is considered a Type 2a shoulder belt, as that term is defined in S3 of Standard No. 209, and whether the automatic belt must provide the warning instructions required for Type 2a shoulder belts by S4.1(l) of Standard No. 209. The answer to both these questions is no.
NHTSA has consistently recognized a distinction between automatic safety belts and the manual safety belts defined in S3 of Standard No. 209 (Type 1, Type 2, and Type 2a belts). The origins and application of this distinction is explained at length in this agency's April 14, 1986 interpretation letter to Mr. David Martin, a copy of which was enclosed in your letter to me. Thus, automatic belts are not treated as Type 1, Type 2, or Type 2a belts for the purposes of Standard No. 209, and are not generally subject to the provisions of Standard No. 209 that apply to each of those types of belts. Since automatic belts are not Type 2a belts, automatic belts are not required to include any warnings required for Type 2a belts.
Instead, S4.5.3 of Standard No. 208 defines the term "automatic belt" and sets forth special provisions for such safety belts. S4.5.3.3 specifies that an automatic belt shall conform to S7.1 of Standard No. 208 (the belt adjustment requirements) and have a single emergency release mechanism, and be equipped with a special warning system in place of the warning system required for manual belts. In addition, S4.5.3.4 specifies that any automatic belts that are not subject to the crash testing requirements for occupant protection under Standard No. 208 must comply with the requirements of S4.2, S4.3, and S4.4 of Standard No. 209 (webbing, attachment hardware, and belt assembly performance requirements, respectively).
I hope this information is helpful. If you have any further questions or need some additional information on the requirements applicable to automatic belts, feel free to contact Steve Kratzke of my staff at this address or by telephone at (202) 366-2992.
Sincerely,
Paul Jackson Rice Chief Counsel
ref:208#209 d:3/30/92