How the driving test is conducted on a slippery surface in Sweden

In Sweden, the driving test includes a mandatory section called Halkbana—a test of driving on a slippery surface. To increase slipperiness, the surface is treated with special substances and water, and the driver's task is to maintain a controlled skid and observe how the car handles. This is a mandatory part of the test, and without it, you cannot obtain a license. Halkbana is considered one of the most difficult driving tests in the world.