Question You use your horn: Answers Whenever it may help prevent a collision. To get other drivers moving in a traffic jam. When you're angry with another driver. Explanation Other drivers cannot see you unless they are looking your way. Your horn may get their attention. Use it whenever it will help prevent a collision. Pass your DMV Written Test with flying colors Take me to the cheat sheet South Dakota This questions appears in the following tests: South Dakota Practice Test 11 South Dakota Practice Test 23