Question How far in advance should you signal your intention to turn? Answers At least 50 feet. As soon as you decide to turn. At least 100 feet. Explanation You must signal your intention to turn by activating your turn signal at least 50 feet before the location of the desired turn. Pass your DMV Written Test with flying colors Take me to the cheat sheet Tennessee This questions appears in the following tests: Tennessee Practice Test 14 Tennessee Practice Test 28