Petronius Longus, captain of the Aventine watch and Falco's oldest friend, has finally nailed one of Rome's top criminals. Under Roman law, citizens are not imprisoned but are allowed "time to depart" into exile outside the Empire. One dark and gloomy dawn, Petro and Falco put the evil Balbinus aboard a ship. But soon after, an outbreak of robbery and murder suggests a new criminal ring has moved into Balbinus's territory. Petro and Falco must descend into the underworld of Vespasian's Rome to investigate.

This book features high-quality, peer-reviewed papers from the 2021 6th International Conference on Intelligent Transportation Engineering (ICITE 2021), held in Beijing, China, on October 29–31, 2021. Presenting the latest developments and technical solutions in Intelligent Transportation engineering, it covers a variety of topics, such as intelligent transportation, traffic control, road networking, intelligent automobile and vehicle operation & management. The book will be a valuable reference for graduate and postgraduate audiences, researchers and engineers, working in Intelligent Transportation Engineering.