49 CFR 229.63 - Lateral motion.

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§ 229.63 Lateral motion.
(a) Except as provided in paragraph (b), the total uncontrolled lateral motion between the hubs of the wheels and boxes, between boxes and pedestals or both, on any pair of wheels may not exceed 1 inch on non-powered axles and friction bearing powered axles, or 3/4 inch on all other powered axles.
(b) The total uncontrolled lateral motion may not exceed 11/4 inches on the center axle of three-axle trucks.
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§ 229.63 Lateral motion.

(a) Except as provided in paragraph (b), the total uncontrolled lateral motion between the hubs of the wheels and boxes, between boxes and pedestals or both, on any pair of wheels may not exceed 1 inch on non-powered axles and friction bearing powered axles, or 3/4 inch on all other powered axles.

(b) The total uncontrolled lateral motion may not exceed 1 1/4 inches on the center axle of three-axle trucks.