The Traffic (Systems) Technician I Passbook® prepares you for your test by allowing you to take practice exams in the subjects you need to study. It provides hundreds of questions and answers in the areas that will likely be covered on your upcoming exam, including but not limited to: electrical, electronic, and magnetic devices; basic electronics, including electrical and electronic circuitry, schematics and wiring diagrams; repair, maintenance, and operating characteristics of electronic equipment; use of electronic test equipment; fundamentals of microcomputer systems; and more.