Commercial carriers (those requiring state and federal credentials/authority regardless of CDL or not) are safer than non commercial drivers. Across the board every states stats repeat this.
Theres lots of folks hauling commercially (heavier than standard large RV) that arent required to have a CDL. So it even goes beyond the fact that CDL drivers are more educated, commercial drivers in general are more educated.
I only bring this up because of earlier posts questioning if livestock haulers are more educated. The stats reflect they are better drivers, so it can be assumed they are more educated drivers
Thers a lot of carriers out there hauling in excess of 10k lbs that arent required to have CDL.