I have some question to consult.
1: there has no starting point, and no ending point with only the middle part available. How should we set it to have both a starting point and an ending point?
3 As shown in red in Figure route 1,route2, they are actually in the same position. What we really want is that only one car goes to one position as they are assigned to work at only place at the same time, and there is no time limit to any of them.
4 Only 3 trucks are not assigned to specific routes, because the quantities supposed to be done exceed the 18 buckets load of the cars. The method I take now is to write down the unassigned routes, and generate a new road map, and record the start time of them as the end time of this map. Do you have any better methods?
5 If I generate a satisfactory roadmap without a backup file of it, when I change the parameters to make it a different roadmap, but I end up wanting to retrieve the previous roadmap, how can I find the historical roadmap?
I'm going to move this question to the Network Analyst page, where you might better find some subject matter experts to answer you questions.
In the meantime, here's a link to the help page.