Systems and techniques describe a collaborative road user safety service that interacts with a coordinating set of collaborative safety devices belonging to road users in order to interchange reliable information about road safety. A distributed ledger/blockchain is utilized in connection with the service to coordinate data exchange between collaborative safety device users and provide data subscribers with reliable safety data that can be used to automate ancillary technical processes. Collaborative safety devices can alert members to road safety issues and be used to confirm information about road safety by collecting sensor and telemetry data. Data subscribers can receive aggregated, anonymized, de-anonymized, or specific road user data pertaining to road users and define the terms of incentives to road users that “self-revise” if a road user's vehicle is a target vehicle via smart contract interfaces. Cryptographic token can be transferred to incentivize data sharing, accuracy, and safe road behaviors.