Circuits or race tracks are closed roads as a ring with start and finish at the same point. The track is divided into time sectors. They are designed for speed races of cars or motorcycles. They have a pit lane, boxes assistance, timing equipment and security spaces beside the track to give security to the racing vehicles. There are different grades of Circuits for different kinds of races: from grade 1 for F1 and Endurance to grade 5 for local races.