| Quality level | Traffic type | |||||
| T1 | T2 | T3 | ||||
| Quality level of the road edifice | Q1 | Regular maintenance | 
 | |||
| Q2 | Priority maintenance | |||||
| Q3 | Reinforcement (10 - 15 cm UTG) | |||||
| Q4 | Reinforcement (15 - 25 cm UTG) | |||||
| Q5 | Reinforcement (treated materials) | 
 | ||||
| >Q5 | ||||||
| Surface course refection | New surface coatings by applying a sand-asphalt carpet (2 - 3 cm thick) or a dense BP (4 - 6 cm thick) | |||||