Code of Federal Regulations Title 30. Mineral Resources § 30.57.16016 Lift trucks

(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.