## 5 Applications of the General Vehicle Routing Model in Case of Out-Plant Material Handling
### Transportation of Perishable Food  
In this delivery type, using the tiered system (depot-satellite-customer), only one depot and several customers are distinguished. There is no need for satellites because the bakeries are located near the shops. Among the relationships between the nodes, the travel time between the locations, the travel distance between the locations, and the route status between the locations can be considered. There are several types of vehicles that can deliver baked goods, but the company has a single type of vehicle. In the vehicle attributes, the following components can be considered: the capacity constraints of the vehicles, and fuel consumption. Owned or borrowed vehicles and the rental fee component can also be considered. Among the temporality attributes, the service handling time of the locations is not considered because no service is performed. When the packing time of the location is considered, it only makes sense in the depot (bread, bakery). The loading time of the locations only makes sense in the depot. The unloading time of the location makes sense for customers. The fixed capital time of the locations is not considered, there is no fixed capital. The administration time of the locations can be considered for the nodes, as can the quality control time of the locations. Fuel filling time can also be considered, but this is not a significant factor during transport. The time window, on the other hand, is even more important because both the depot and the shops (customers) have opening hours. There can be multiple time windows, as the store (customers) may not always accept goods. Among the attributes of products and services, the capacity constraint of each location per the product type, and their demand for products by product type can be considered. The storage level of the locations may be worth considering. It is also worth considering the prices of the product. Among the metrics, minimization of the length of the route is an important factor; maximization of profit can also be an important factor, where maximization of sold values, minimization of loading costs, minimization of administrative costs, minimization quality control cost, minimization fuel consumption, and minimization rental fee can be considered. Route status maximization (minimization of the idle time of vehicles). Time minimization can be also an important metric, it can contain the followings: minimization of route time, minimization of packaging time, minimization of loading time, minimization of administrative time, minimization of quality control time, and minimization of waiting time for nodes. Among the penalty points, the following can be considered: exceeding the number of suppliers, exceeding the number of suppliers. Each component depends on the temporality (period). The period can be given, for example, a week and the stores must be served 7 times a week. But we can even bring a product to the store several times a day. The attributes may be different during each period, e.g., the store's bakery needs will be different during the week than on weekends, and opening hours will be different. The first test run included the following parameters: products (fruit, vegetable). The result was the following vehicle list: truck, refrigerator train, vehicular vehicle, and sea ship. The validation of the first test run was the following: truck, refrigerator train, vehicular vehicle, and sea ship are correct. There were no parameters that were missed by the system. The second test run included the following parameters: products (dairy products). The result was the following vehicle list: vehicular vehicle. The validation of the second test run was the following: vehicular vehicle is correct. The following elements were missed by the test run: Perishable product train, tanker train, liquid transporter ship, refrigerator ship, liquid transporter ship. The third test run included the following parameters: products (meat). The result was the following vehicle list: truck, refrigerator train, and vehicular vehicle.