# Bus Level Up
Operators can level up their Buses by burning ART. Each level-up takes a fixed time to complete, which increases along with the amount of ART required according to the Bus level. This process can be made faster/boosted by using even more ART.
For more details please refer to the following table:
| Level | ART Burned | Time（hour） | Daily Earning Cap |
|---|
| 0 | 0 | 0 | 10 |
| 1 | 1 | 1 | 15 |
| 2 | 2 | 2 | 20 |
| 3 | 3 | 3 | 25 |
| 4 | 4 | 4 | 30 |
| 5 | 5 | 5 | 35 |
| 6 | 6 | 6 | 40 |
| 7 | 7 | 7 | 45 |
| 8 | 8 | 8 | 50 |
| 9 | 9 | 9 | 55 |
| 10 | 20 | 10 | 60 |
| 11 | 11 | 11 | 70 |
| 12 | 12 | 12 | 80 |
| 13 | 13 | 13 | 90 |
| 14 | 14 | 14 | 100 |
| 15 | 15 | 15 | 110 |
| 16 | 16 | 16 | 120 |
| 17 | 17 | 17 | 130 |
| 18 | 18 | 18 | 140 |
| 19 | 19 | 19 | 150 |
| 20 | 40 | 20 | 160 |
| 21 | 21 | 21 | 170 |
| 22 | 22 | 22 | 180 |
| 23 | 23 | 23 | 190 |
| 24 | 24 | 24 | 200 |
| 25 | 25 | 25 | 210 |
| 26 | 26 | 26 | 250 |
| 27 | 27 | 27 | 300 |
| 28 | 28 | 28 | 350 |
| 29 | 29 | 29 | 400 |
| 30 | 60 | 30 | 500 |
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