The $1986$ Commercial Motor Vehicle Safety A$.$ct standardized state driver's licenses for interstate truckers and created a bureau to centralize traffic violation records. Why was this law passed at the federal level?

Centralized record keeping was a simpler solution than having states coordinate and update their respective records.

Truckers demanded a nationwide system of licensing so that they could pay fewer fees.

States had different regulations regarding traffic violations and were not interested in coordinating this information.

The federal government has control of driver's license issuance per the Constitution.