Final answer:
A driver will lose their CDL for a minimum of one year for the first offense of operating a commercial vehicle under the influence of alcohol or drugs.
Step-by-step explanation:
For the first offense of driving a commercial vehicle under the influence of alcohol or drugs, a driver will lose their CDL (Commercial Driving License) for at least one year. This is a serious offense that can jeopardize not only the safety of the driver but also of others on the road. It's important for commercial drivers to understand the gravity of such actions and the resulting consequences, which include potential employment implications and legal penalties.