multi-resource vrp / trsp

[Denzel]

Hello all,

I have a VRPTW scenario where a node must be scheduled while respecting the schedules and routes of multiple vehicles/resources simultaneously.

Example

• Vehicle A route/time window: 10:00–18:00
• Vehicle B route/time window: 08:00–14:00

The shared task should only be scheduled at a time/location where both routes can feasibly perform it, while also considering:

• existing planned tasks on both routes
• travel times for both vehicles
• overall route optimization

So this is not just an overlap of free time windows — the routing cost and insertion position in both routes matter as well.

From my understanding this resembles a synchronized / multi-resource VRP.

What is the recommended way to model this in OR-Tools RoutingModel?

Kind regards,

Denzel