You see a choice of the different traffice rules in Europe. If you move the mouse pointer about the country identifier, a corresponding overview is shown on the right small section.
In the Europe edition It is possible to adapt traffic rules of the city Gobesdorf to other countries. Then you can drive on the same crossroads in different country variants. Click onto the small options display near to the state flag on the left.
The choice "United Kingdom" serves only for information here. Adapting Gobesdorf due to the driving on the left in England isn't possible. You can practise driving on the left in exercises 15 to 17 instead. Select exercise 23 for "Madrid" to drive in the Spanish traffic.