Question All of the following are dangerous to do while driving. Which is also illegal? Answers Wearing a headset that covers both ears. Having one or more interior lights on. Using cruise control on residential streets. Explanation It is illegal to drive while wearing a headset or earplugs in both ears. Pass your DMV Written Test with flying colors Take me to the cheat sheet California This questions appears in the following tests: California Practice Test 15 California Practice Test 3