30 CFR §56.16016
Fork and other similar types of lift trucks shall be operated with the—
- (a)Upright tilted back to steady and secure the load;
- (b)Load in the upgrade position when ascending or descending grades in excess of 10 percent;
- (c)Load not raised or lowered enroute except for minor adjustments; and
- (d)Load-engaging device downgrade when traveling unloaded on all grades.