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Seat belt load requirements on agricultural tractors

Summary An agricultural equipment maker asked about tractor seat belt and anchorage loads under the rollover protection rule. OSHA said the seat belt load was not intended to equal the anchorage load requirement and pointed to the incorporated SAE standard with stated exceptions.
Document
Federal opinion letter
Agency
Occupational Safety and Health Administration (OSHA)
Document number
1981-10-22-0
Date issued
October 22, 1981
Status
Active
Status last verified October 10, 2026

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October 22, 1981

Mr. William E. Lawler
Specifications Manager
Indian Mills & Manufacturing, Inc.
[Recipient address omitted]
Dear Mr. Lawler:

Thank you for your letter of October 5, 1981, requesting a clarification of 29 CFR 1928.51, Roll-over Protective Structures (ROPS) for tractors used in agricultural operations.

It was not the intent of 29 CFR 1928.51(b)(2)(ii)(B) to make the seat belt load requirement equal to the seat belt anchorage load requirement as mentioned in your letter. 29 CFR 1928.51(b)(2)(ii) requires each seat belt to meet the requirements set forth in Society of Automotive Engineers Standard SAE J4C, 1965 Motor Vehicle Seat Belt Assemblies, except as noted in Subparagraphs A, B and C.

If I may be of further assistance, please feel free to call or write.

Sincerely,
Bruce Hillenbrand
Deputy Director,
Federal Compliance and State Programs

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