OSHA requirements are set by statute, standards and regulations. Our interpretation letters explain these requirements and how they apply to particular circumstances, but they cannot create additional employer obligations. This letter constitutes OSHA's interpretation of the requirements discussed. Note that our enforcement guidance may be affected by changes to OSHA rules. Also, from time to time we update our guidance in response to new information. To keep apprised of such developments, you can consult OSHA's website at https://www.osha.gov.

October 23, 1975


SUBJECT:        Crane Speeds

Title 29 CFR 1910.179(e)(2) and (e)(3) states, among things, that bumpers or equivalent are required on crane bridges and trolleys unless operated at a "slow" rate of speed. "Slow" is not defined in the standard.

Guidance for determination of "slow" can be found in the attached table of suggested operating speeds -- published by Crane Manufacturers Association of America.

David H. Rhone
Assistant Regional Director
for Occupational Safety and Health