Question A vehicle must pass a safety inspection: Answers Twice a year. Once a year. Every six months. Every six weeks. Explanation Before you can renew your vehicle's registration, it must pass an annual safety inspection. This inspection must occur within 90 days of when you are renewing the vehicle. In several North Carolina counties, an emission inspection is also required. Pass your DMV Written Test with flying colors Take me to the cheat sheet North Carolina This questions appears in the following tests: North Carolina Practice Test 25 North Carolina Practice Test 17