Original instances from:
Kletzander L., Musliu N.
Solving Large Real-Life Bus Driver Scheduling Problems with Complex Break Constraints 

Large instances from:
Kletzander L., Mannelli Mazzoli T., Musliu N.
Metaheuristic Algorithms for the Bus Driver Scheduling Problem with Complex Break Constraints

3 files per instance:
instance.csv		bus legs
instance_dist.csv	distance matrix for tour changes
instance_extra.csv	extra working time starting or ending at a station

realistic_xx_y.csv
xx	Size of the instance
y	Instance number