What is the minimum age requirement to apply for a Class B driver's license?

[DelMorgan]

To apply for a Class B driver's license, the applicant must be between 21 and 60 years old. Below are the relevant details about obtaining a Class B driver's license: 1. Direct application: Individuals without a driver's license must meet the following requirements: aged between 21 and 50, with a visual acuity of 5.0 or above, no red-green color blindness, both thumbs intact, at least three fingers on each hand must be intact, normal limb and finger movement functions, normal lower limb movement functions, and no motor dysfunction in the torso or neck. 2. Upgrade: Those who already hold a C1 driver's license can upgrade to a Class B license if they meet the following conditions: have held the C1 license for at least one year with no full-point penalty record in the most recent scoring cycle; have not been involved in a fatal traffic accident where they bore equal or greater responsibility; have never driven under the influence of alcohol; have not had their driver's license revoked or canceled within the past ten years; aged between 21 and 50, with naked or corrected visual acuity reaching 5.0 on the logarithmic visual acuity chart. They can apply for the upgrade to a Class B license at their registered residence.