Dial-A-Ride Problem
Here we discuss the DARP problem, which is fully studied in [1]
Ref.
[1] Laporte, G. (2003). A tabu search heuristic for the static multi-vehicle dial-a-ride problem. Transportation Research Part B, 37, 579–594. https://doi.org/10.1016/S0191-2615(02)00045-0