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On multiple drive shaft buses, does § 393.89 require that all segments of the drive shaft be protected no matter the segments’ length?

Section § 393.89: Buses, driveshaft protection.

Guidance Q&A

Question 2: On multiple drive shaft buses, does § 393.89 require that all segments of the drive shaft be protected no matter the segments’ length?

Guidance: Yes. Each drive shaft must have one guard or bracket for each end of a shaft which is provided with a sliding connection (spline or other such device).

Regulatory Topic: Protection for multiple drive shafts on buses
Effective Date: Sunday, May 4, 1997
Issued Date: Friday, April 4, 1997