What level of driver's license is required for a bus?

[DeZoey]

Buses with more than 19 seats require an A1 driver's license, while medium-sized buses with 10 to 19 seats require a B1 driver's license (A1 and A2 licenses are also acceptable). However, A1 and B1 licenses cannot be obtained directly; applicants must first obtain a B2 or A3 license and then upgrade. To upgrade to a B1 license, one must have held a B2 or A3 license for at least three years. To upgrade to an A1 license, one must have held a B2 or A3 license for at least five years. According to the "Regulations on the Application and Use of Motor Vehicle Driver's Licenses": 1. Article 14 states that for first-time applicants of a motor vehicle driver's license, the permitted vehicle types include urban buses, large trucks, small cars, small automatic transmission cars, low-speed trucks, three-wheeled cars, small automatic transmission cars for the disabled, ordinary three-wheeled motorcycles, ordinary two-wheeled motorcycles, light motorcycles, wheeled self-propelled machinery, trolleybuses, and trams. 2. For those who already hold a motor vehicle driver's license and wish to add permitted vehicle types, the additional permitted vehicle types include large buses, tractors, urban buses, medium-sized buses, large trucks, small cars, small automatic transmission cars, low-speed trucks, three-wheeled cars, ordinary three-wheeled motorcycles, ordinary two-wheeled motorcycles, light motorcycles, wheeled self-propelled machinery, trolleybuses, and trams.