What does downgrading a driver's license at age 70 mean?

[FrankLynn]

Downgrading a driver's license at age 70 means reducing the scope of vehicle types one is permitted to drive. Generally, it can be categorized into statutory downgrading and voluntary downgrading. Statutory downgrading includes age-related downgrading and other statutory downgrading. If the driver's age exceeds 60 or 70, it falls under age-related downgrading within statutory downgrading. The following are the downgrading conditions: 1. For those over 60 years old, downgrade from A1, A2, A3, B1, B2, N, P to C1 or C2. 2. For those over 70 years old, downgrade from C3, C4, D, E, M to F, or the motor vehicle driver voluntarily reduces the permitted driving types. 3. If the motor vehicle driver's physical condition changes and no longer meets the requirements for the originally permitted driving types but still meets the requirements for other permitted driving types.