2. It can be seen that the solutions to C101, C201 obtained by the SA heuristic of are the same as the best known solution, and the solutions to R101, R201, RC101, RC201 are better than the best known solutions. Note that this is due to the fact that TTRPTW only concerns with minimizing the total travel distance of vehicles, while in VRPTW, minimizing the number of vehicles used is also considered. Nevertheless, the results of these initial experiments is a good indication of the performance of the proposed approach on solving the VRPTW type problems, when minimizing the number of vehicles used is not as important as minimizing the total route distance