Question This sign means: Answers Lane shifting. Flagger ahead. Two-way traffic. Sharp turn, slow down. Explanation Warning signs prepare drivers for upcoming road conditions and hazards and are usually yellow with black markings. This sign tells drivers to be aware of shifting lanes and to follow the new lane trajectory. Pass your DMV Written Test with flying colors Take me to the cheat sheet Indiana This questions appears in the following tests: Indiana Practice Test 17 Indiana Practice Test 47