Work Truck Acces. Riggs Technology Group's Truck Ladder swings down in one easy motion and adjusts easily for height and uneven ground. When not in use it fits snuggly to the inside of the tailgate where it doesn't take up valuable cargo space and latches automatically in place to eliminate rattling. It is made of strong, lightweight structural aluminum and fiberglass and meets American National Safety Institute (ANSI) Standard 14.5, rated type 1AA -375 pounds. All hardware is stainless or plated for chemical-resistance and all weather protection.