Russian Tunnel......

The 3,150m long Lefortovo tunnel in Russia is the longest in-city tunnel in the entire world. It is nicknamed 'The Tunnel of Death'.
See for yourself why.

There is a river running over the tunnel, and water leaks through in some areas. When the temperature reaches 0°C (as it does during the Winter in Russia) the road freezes and becomes very slippery. The result is the attached video which was taken during a single day with the tunnel surveillance camera.   Congratulations to the dual-carriage bus driver - imagine the passengers in the back!   What a ride!
The next time you complain about traffic, remember this video.....Russian Engineering!