Autonomous vehicle platoon is a promising paradigm towards traffic congestion problems in the intelligent transportation system. However, under certain circumstances, the advantage of the platoon cannot be fully developed. In this paper, we focus on the highway Electronic Toll Collection (ETC) charging problem. We try to let the opportunistic platoon pass the ETC as a whole. There are three main issues in this scenario. Firstly, the opportunistic platoon is temporarily composed; vehicles do not trust each other. Secondly, single vehicle may try to escape from the ETC charging by following the platoon. Finally, platoon members may collude with each other and try to underreport the number of vehicles in the platoon so as to evade payment. To solve these challenges, we propose a blockchain-based efficient highway toll paradigm for the opportunistic platoon. The driving history, credential information of every registered vehicle, is recorded and verified from the blockchain. A roadside unit (RSU) is adopted to distinguish the single vehicle from the platoon and in charge of lane allocation. Additionally, an aggregate signature is introduced to accelerate the authentication procedure in the RSU. We analyse the potential security threats in this scenario. The experimental result indicates that our scheme is efficient and practical.

中文翻译：

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BEHT：机会自动驾驶汽车排的基于区块链的高效高速公路收费范例

自主车辆排是解决智能交通系统中交通拥堵问题的一种有前途的范例。但是，在某些情况下，排的优势无法得到充分发挥。在本文中，我们重点研究高速公路电子收费（ETC）的收费问题。我们试图让机会主义排整体通过ETC。在这种情况下，存在三个主要问题。首先，机会主义排是临时组成的；车辆互不信任。其次，单排车辆可能会通过跟随排试图逃脱ETC收费。最后，排成员可能相互串通，并试图低估排中的车辆数量，以逃避付款。为了解决这些挑战，我们为机会排提出了一种基于区块链的高效高速公路收费范例。从区块链记录并验证行驶历史，每个已注册车辆的凭证信息。采用路侧单元（RSU）区分单排车辆和排车辆，并负责车道分配。此外，引入了聚合签名以加速RSU中的身份验证过程。我们分析了这种情况下的潜在安全威胁。实验结果表明，该方案是有效和实用的。引入了聚合签名以加速RSU中的身份验证过程。我们分析了这种情况下的潜在安全威胁。实验结果表明，该方案是有效和实用的。引入了聚合签名以加速RSU中的身份验证过程。我们分析了这种情况下的潜在安全威胁。实验结果表明，该方案是有效和实用的。