Can an A2 license holder drive an A3 vehicle?

[StFinley]

A2 is a tractor driving license and does not permit driving A3 city buses. To drive city buses, one needs to apply for an additional license, either A3 or A1. The resulting license type would be A2A3 or A1A2. Regulations for applying for an additional license: If you already hold a motor vehicle driving license and wish to add a permitted vehicle type, you must not have any full-score records in the current scoring cycle or the most recent scoring cycle prior to the application. For A2 license holders applying to add an A3 license, they must have no full-score (12 points) record in the previous scoring cycle, no full-score record in the current scoring cycle at the time of application, and be between 21 and 50 years old. Permitted vehicle types: Permitted vehicle types for A2 include: heavy and medium-sized full trailers, semi-trailer combinations, medium-sized passenger vehicles (including city buses with a capacity of 10-19 people), large trucks, and small cars, among others. Permitted vehicle types for A3 include: city buses with a capacity of 10 or more people, small cars, etc. (but not large passenger buses).