What are the specific securement requirements for vertically positioned paper rolls with a width ranging from 1.25 to 1.76 times their diameter to ensure minimum security?

Situation #4
A paper roll or the forwardmost roll(s) in a group of paper rolls is not prevented from tipping or falling forward by vehicle structure or other cargo.
Paper roll width is more than 1.25 times and less than 1.76 times its diameter.
Only friction mats are used for forward securement.
Solution #4:
The friction mat alone is adequate. The friction mat allows the roll to slide on the floor without tripping the roll.