諸如蘋果公司等企業，已將碳中和作為其目標政策，微軟甚至是目標更進一步之負碳排。此外，在2021年聯合國氣候變化大會（COP26）之後，日本、印度等國亦承諾實現淨零碳排。作為整條供應鏈中效率最低、成本最高之環節，最後一哩路配送勢必需要變革。
而近年來，在商業物流領域，無人航空載具，也被稱作無人機，亦經常被當作物流運載工具選項之一。無人機可在卡車路線上之節點發射及返回，與卡車協同服務，同時向客戶交付貨物，從而提高服務質量，降低物流成本。
本研究旨在透過建立搭載無人機之環保車輛路徑問題（GVRPD）模型來改善相關問題。此模型之目標為最小化交貨總成本，並將二氧化碳排放量換算為碳成本，作為其中一項成本來源。此外，模型也將透過基因演算法規劃卡車行進路線，進而指派無人機進行協同交付服務。
本研究隨機生成資料集以進行實驗，並分析在無無人機時，及導入無人機後兩者間之成本變化，並進而觀察二氧化碳排放數值變化。結果顯示GVRPD可節省成本支出，亦可同時兼顧二氧化碳排放，使其下降。此外，亦針對幾個特定參數進行進一步分析。

Many companies, such as Apple, have adopted carbon neutrality as a target policy, and even Microsoft’s goal is to further negative carbon emissions. Also, after the 2021 United Nations Climate Change Conference (COP26), Japan, India, and other countries pledged to commit to net-zero carbon emissions. As the least efficient and costliest part of the entire supply chain, it is need to reform the last mile delivery.
In recent years, in the field of commercial logistics, unmanned aerial vehicles (UAV), also known as drones, are often considered as a logistics vehicle option. Drones can be launched and returned at nodes on the truck's route, coordinate services with the truck, and deliver cargo to customers simultaneously, thereby improving service quality and reducing logistic costs.
This study intends to improve related issues by formulating a model for the Green Vehicle Routing Problem with Drones (GVRPD). The objective of the model is to minimize the total cost of delivery and convert the CO2 emission into carbon costs as one of the cost sources. In addition, the model will also arrange the route of trucks through the Genetic Algorithm, and then assign drones for collaborative delivery services.
This study randomly generates a data set for experimentation and analyzes the cost changes at the no-drone state and after introducing drones, then further observes the variation in the value of the CO2 emission. The results show that GVRPD not only can lessen the total cost but meanwhile also reduce the CO2 emission. In addition, further analysis is carried out for several specific parameters.

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