Question If you see side-by-side red lights flashing at a railroad crossing, you must: Answers Signal before going any further. Maintain your speed and cross the railroad. Slow down. Stop. Explanation If a railroad crossing has side-by-side red lights that are flashing, you must stop. Pass your DMV Written Test with flying colors Take me to the cheat sheet Washington This questions appears in the following tests: Washington Practice Test 3 Washington Practice Test 14