Which of the following are you prohibited from driving a CMV with on the highway?

Driving a commercial motor vehicle (CMV) with studded rims on the highway is specifically prohibited in many jurisdictions, including Texas. Studded rims can cause significant damage to road surfaces, especially in areas that do not receive sufficient winter conditions to justify their use. These rims can also negatively impact vehicle handling and safety on dry or wet pavement.

In contrast, worn tires, broken headlights, and excessive cargo each have specific legal implications that affect safety and compliance but do not fall under the outright prohibition seen with studded rims. For instance, worn tires can compromise traction and stopping distances, broken headlights can reduce visibility, and excessive cargo can lead to unsafe driving conditions or overweight fines, but they don't carry the same prohibition across the board as studded rims do. Therefore, knowing the specific regulations about studded tires helps ensure compliance and safety on the road.