ANSWER · B
Sidelights are warning lights, while headlights are for illuminating the road at night. Visual errors are common at dusk, so drivers turn on sidelights to be visible to others and headlights to illuminate the road, helping driving safety.
Pass China's driving test.
All 3,068 questions, mock exams, wrong-answer reviews and bookmarks in the app. One-time $7.99.
Download on the App Store