This fourth edition of the original book is a result of new researches, studies, and experiences of the author with the new trends and technologies in Traffic Engineering, Traffic Education, and Traffic Enforcement. This edition also includes new topics and lessons covered by the Commission of Higher Education (CHED) CMO 05, Series of 2018 and by the new Table of Specifications (TOS) for the Criminologists Licensure Examinations beginning August 2024.