Research Article
A Model for Bus Crew Scheduling Problem with Multiple Duty Types
Table 2
Parameter of different duty types.
| Duty types | Earliest sign-on time | Latest sign-off time | Maximum working time (min) |
| Early | 6:00 | 13:00 | 300 | Day | 9:00 | 18:00 | 300 | Late | 15:00 | 22:00 | 300 |
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