How to replace tail light bulb for Audi A4 (B6)

Tail lights (aka rear lamps) are situated at the rear light cluster of the vehicle, which primary purpose is to alert others about your presence on the road. These lights produce red colored beam as stop lamps, however the latter triggers much brighter light. As a rule tail lights will proceed glowing while the front lights are on. It's crucial that tail lamps are not obstructed by the cargo, otherwise the car visibility may be reduced. Analogous outcome occurs in a case of a broken tail light, for that reason immediate bulb replacement is needed.