Can C1 directly upgrade to B1?

[SanKate]

C1 cannot directly upgrade to B1, but you can add B1 to your C1 license. To upgrade from a C1 driver's license to B1, you need to meet these four requirements: Hold a C1 driver's license for more than three years; No record of accumulating 12 penalty points in the last three consecutive scoring cycles; Physical conditions must meet the requirements: Age: 21 years or older, under 50 years old; Height: 150 cm or taller; Vision: Naked or corrected visual acuity of at least 5.0 on the logarithmic visual acuity chart; Hearing: Ability to distinguish the direction of sound sources with each ear 50 cm away from a tuning fork; Upper limbs: Both thumbs intact, with at least three other fingers intact on each hand, and normal limb and finger movement function; Lower limbs: Both lower limbs intact with normal movement function, and length difference not exceeding 5 cm. Note: The B1 upgrade application can only be processed at the vehicle management office in the driver's registered residence.