Question Within how many feet is a driver required to dim their high beams before meeting another vehicle? Answers 250 feet 400 feet 500 feet Explanation Bright lights must be dimmed 500 feet before meeting an oncoming vehicle or 300 feet when approaching a vehicle from behind. Pass your DMV Written Test with flying colors Take me to the cheat sheet Illinois This questions appears in the following tests: Illinois Practice Test 9 Illinois Practice Test 24