Real-time decision making in autonomous transportation systems (ATS) relies on processing traffic data. The assurance of the integrity and security of traffic data over its life cycle is a critical aspect to the design of decision-making frameworks for ATS. In addition, ATS should comply with regulatory restrictions such as the General Data Protection Regulation and the California Consumer Privacy Act. In 2008, the Bitcoin cryptocurrency system and its key technology, Blockchain, were introduced in which distributed ledgers of verified transactions are created with no central control. We propose a Blockchain-inspired approach for real-time and distributed decision-making and information sharing mechanisms for ATS.