About the author of Videos ,Wadis007: 

He is very very experienced tram driver. he started in the depth of Russia, and then moved into Prague. There he drives a tram and acts as a webmaster a Russian Representative of a Prague Tram Web. ... He described the very complex process of becoming a tram driver in Prague. The process is hard both in medical exams, training, and driving practice. The tram driving requierement in Prage are 100 times harder then those of Russian Cities. Maybe its much easier to work as a tram driver then to study.

There are some employees, especially drivers who damn the work when their work day finished. Wadis007 praises his work and even finds an energy to make videos of it.

A little bonus, Driving throught the newly build Barandov Streetch,
where the tramline resembles a modern light rail system