Vehicle Constraints

Constraints specifically related to vehicle properties and limitations.

Related Time-Based Constraints

Some vehicle constraints are time-dependent and can be found in the Time Based Constraints section:

• Vehicle Working Hours: Defining start and end times.
• Driver Break: Managing driver rest periods.
• Maximum Trip Duration: Limiting the length of a single trip.

📄️ Vehicle Capacity and Node Demand

In Vehicle Routing Problems (VRP), vehicle capacity and node demand are fundamental constraints that define the problem's boundaries. The optimizer's goal is to create the most efficient routes while ensuring that the vehicle's capacity is not exceeded at any point along its route.

📄️ Vehicle depot

In the context of the Vehicle Routing Problem (VRP), a depot is a central location where vehicles start and end their routes. It serves as the origin and destination for all vehicle trips. The depot is a critical component of the VRP, as it represents the base of operations for the fleet.

📄️ Maximum Trips Per Vehicle

In some logistics scenarios, it's necessary to limit the number of trips a vehicle can make from a depot. For example, a driver might have a maximum number of routes they can perform in a shift, or a vehicle might need to return to the depot for reloading or maintenance after a certain number of tours.

📄️ Vehicle Characteristics

Vehicle characteristics encompass the various attributes and capabilities of vehicles that influence their suitability for specific tasks or routes. These characteristics can include factors like capacity, vehicle type, specialized equipment, driver skills, and availability.

📄️ Vehicle cost

In the Vehicle Routing Problem (VRP), Vehicle Cost is a fixed, one-time cost that is added to the total solution cost for each vehicle that is used to serve one or more orders. Think of it as an "activation fee" for deploying a vehicle.

📄️ Vehicle Labels and Order Labels

One way to manage these relationships between vehicles and orders is through the use of vehicle labels and order labels. These labels act as tags or identifiers that provide additional information about the vehicles and orders, enabling more sophisticated and nuanced route optimization.

📄️ Vehicle Efficiency

In the context of the Stateless API, Vehicle Efficiency refers to a set of constraints designed to optimize and control how a vehicle's capacity is utilized throughout its route. These constraints allow you to enforce rules about minimum loads during a trip and maximum loads at the end of a trip.

📄️ Maximum Pickup and Dropoff Locations

In many logistics operations, efficiency is not just about the number of stops but about the distinct locations visited. To optimize routes effectively, you may want to limit the number of unique pickup or drop-off clusters a vehicle visits in a sequence, rather than just the total number of stops.