PPFPS: A Privacy-Preserving Platoon Management Scheme for Flexible Platoon Splitting in Urban Freight Delivery

This research proposes PPFPS, a privacy-preserving system for managing vehicle platoons (groups of trucks traveling together) in urban freight delivery. The scheme uses encrypted Manhattan distance calculation (a method for measuring distances along city streets rather than straight lines) combined with reputation tracking to let delivery vehicles flexibly join and leave groups while keeping their locations private. The system reduces computational work on central authorities by 66-78% compared to existing approaches.