CLEAN : European taxi drivers block Brussels over Uber

The video discusses the intricacies of taxi services in Europe, highlighting the skills required by professional drivers, such as navigating traffic and using GPS effectively. It emphasizes the extensive knowledge needed to drive a London Black Cab, including learning thousands of streets and points of interest. The video also touches on the challenges faced in the taxi sector, such as sector-specific issues and the importance of a taxi manifest.

Describe the knowledge that London Black Cab drivers are required to have.

What does the term 'the knowledge' refer to in the context of London cab drivers?