PLANNING AND MODELING OF THE TIME FOR ACCEPTANCE AND STAY OF VEHICLES AT THE LOADING AND DISCHARGING POINTS

When delivering goods in the warehouses of enterprises, courier and forwarding companies, and for logistics operators, loading and unloading is usually done manually or mechanically. On the other hand, the load can first be placed on the ground next to the vehicle and then accepted in the pile, o...

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Main Authors: Asen ASENOV, Velizara PENCHEVA, Ivan GEORGIEV
Format: Article
Language:English
Published: Silesian University of Technology 2021-12-01
Series:Transport Problems
Subjects:
Online Access:http://transportproblems.polsl.pl/pl/Archiwum/2021/zeszyt4/2021t16z4_03.pdf
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author Asen ASENOV
Velizara PENCHEVA
Ivan GEORGIEV
author_facet Asen ASENOV
Velizara PENCHEVA
Ivan GEORGIEV
author_sort Asen ASENOV
collection DOAJ
description When delivering goods in the warehouses of enterprises, courier and forwarding companies, and for logistics operators, loading and unloading is usually done manually or mechanically. On the other hand, the load can first be placed on the ground next to the vehicle and then accepted in the pile, or a ramp can be used so that it can be delivered directly to the warehouse or vice versa. When there is a ramp, the loading and discharging activity is performed faster and it is much easier. When there are many vehicles serviced on ramps, it is necessary to have a free ramp available. This is often not the case when the warehouse has more ramps and a large exchange of goods. In this case, a time schedule is usually made for the reception and handling of vehicles, which is communicated to carriers and drivers so that there is no unnecessary downtime of vehicles and overloading of points with ramps. There are cases in which the established organization of work cannot be performed due to various force majeure or other reasons, such as delays at border crossings, bans on passing through certain sections, change in the working hours of warehouses, pandemic and other reasons. The vehicles then arrive at the checkpoints at a time that is different from their schedule and have to wait to be serviced. Waiting at the unloading points makes drivers nervous and they become dissatisfied with the working conditions. In this respect, a solution has been proposed based on the working hours and occupancy of the loading and discharging point and the time of arrival of the vehicles at the point, and how to receive the vehicles so that the waiting time between them is the shortest. For this purpose, a partially integer linear optimization model has been created in Matlab, which provides a valid plan with the shortest waiting times for all vehicles. Simulations have been made for different numbers of ramps and vehicles. The results show that the model is suitable for pre-creating a valid plan for the operation of the vehicle warehouse, if any, with a minimum waiting time.
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spelling doaj.art-5d5b74b4a41b43a687fe618e08f414692022-12-21T18:33:40ZengSilesian University of TechnologyTransport Problems1896-05962300-861X2021-12-01164233410.21307/tp-2021-057PLANNING AND MODELING OF THE TIME FOR ACCEPTANCE AND STAY OF VEHICLES AT THE LOADING AND DISCHARGING POINTSAsen ASENOV0Velizara PENCHEVA1Ivan GEORGIEV2University of Ruse “Angel Kanchev”University of Ruse “Angel Kanchev”University of Ruse “Angel Kanchev”When delivering goods in the warehouses of enterprises, courier and forwarding companies, and for logistics operators, loading and unloading is usually done manually or mechanically. On the other hand, the load can first be placed on the ground next to the vehicle and then accepted in the pile, or a ramp can be used so that it can be delivered directly to the warehouse or vice versa. When there is a ramp, the loading and discharging activity is performed faster and it is much easier. When there are many vehicles serviced on ramps, it is necessary to have a free ramp available. This is often not the case when the warehouse has more ramps and a large exchange of goods. In this case, a time schedule is usually made for the reception and handling of vehicles, which is communicated to carriers and drivers so that there is no unnecessary downtime of vehicles and overloading of points with ramps. There are cases in which the established organization of work cannot be performed due to various force majeure or other reasons, such as delays at border crossings, bans on passing through certain sections, change in the working hours of warehouses, pandemic and other reasons. The vehicles then arrive at the checkpoints at a time that is different from their schedule and have to wait to be serviced. Waiting at the unloading points makes drivers nervous and they become dissatisfied with the working conditions. In this respect, a solution has been proposed based on the working hours and occupancy of the loading and discharging point and the time of arrival of the vehicles at the point, and how to receive the vehicles so that the waiting time between them is the shortest. For this purpose, a partially integer linear optimization model has been created in Matlab, which provides a valid plan with the shortest waiting times for all vehicles. Simulations have been made for different numbers of ramps and vehicles. The results show that the model is suitable for pre-creating a valid plan for the operation of the vehicle warehouse, if any, with a minimum waiting time.http://transportproblems.polsl.pl/pl/Archiwum/2021/zeszyt4/2021t16z4_03.pdfvehiclesoptimizationwarehousetransceiver pointsramps
spellingShingle Asen ASENOV
Velizara PENCHEVA
Ivan GEORGIEV
PLANNING AND MODELING OF THE TIME FOR ACCEPTANCE AND STAY OF VEHICLES AT THE LOADING AND DISCHARGING POINTS
Transport Problems
vehicles
optimization
warehouse
transceiver points
ramps
title PLANNING AND MODELING OF THE TIME FOR ACCEPTANCE AND STAY OF VEHICLES AT THE LOADING AND DISCHARGING POINTS
title_full PLANNING AND MODELING OF THE TIME FOR ACCEPTANCE AND STAY OF VEHICLES AT THE LOADING AND DISCHARGING POINTS
title_fullStr PLANNING AND MODELING OF THE TIME FOR ACCEPTANCE AND STAY OF VEHICLES AT THE LOADING AND DISCHARGING POINTS
title_full_unstemmed PLANNING AND MODELING OF THE TIME FOR ACCEPTANCE AND STAY OF VEHICLES AT THE LOADING AND DISCHARGING POINTS
title_short PLANNING AND MODELING OF THE TIME FOR ACCEPTANCE AND STAY OF VEHICLES AT THE LOADING AND DISCHARGING POINTS
title_sort planning and modeling of the time for acceptance and stay of vehicles at the loading and discharging points
topic vehicles
optimization
warehouse
transceiver points
ramps
url http://transportproblems.polsl.pl/pl/Archiwum/2021/zeszyt4/2021t16z4_03.pdf
work_keys_str_mv AT asenasenov planningandmodelingofthetimeforacceptanceandstayofvehiclesattheloadinganddischargingpoints
AT velizarapencheva planningandmodelingofthetimeforacceptanceandstayofvehiclesattheloadinganddischargingpoints
AT ivangeorgiev planningandmodelingofthetimeforacceptanceandstayofvehiclesattheloadinganddischargingpoints