Can I upgrade from a C1 driver's license to a B1 after three years?

[MacDavid]

C1 driver's license holders can upgrade to a B1 driver's license after three years. To upgrade from a C1 to a B1 license, the following four requirements must be met: Hold a C1 driver's license for more than three years; No record of accumulating 12 penalty points in any of the last three consecutive scoring cycles; Physical conditions must meet the requirements: Age: Between 21 and 50 years old; Height: At least 150 cm; Vision: Naked or corrected visual acuity must reach 5.0 or above on the logarithmic visual acuity chart; Hearing: Able to distinguish the direction of sound sources with each ear at a distance of 50 cm from a tuning fork; Upper limbs: Both thumbs must be intact, and each hand must have at least three other fingers intact with normal movement function; Lower limbs: Both lower limbs must be intact with normal movement function, and the length difference should not exceed 5 cm. Note: The B1 upgrade application can only be processed at the local vehicle management office where the driver's household registration is located.