Question: raised line markers on the roadway and shoulder are used to define
[{'answer': 'for increased visibility', 'provenance': [{'wikipedia_id': '1280667', 'title': 'Raised pavement marker', 'start_paragraph_id': 5, 'start_character': 472, 'end_paragraph_id': 5, 'end_character': 496, 'bleu_score': 1.0, 'section': 'Section::::Reflective raised pavement markers.\n'}]}, {'provenance': [{'wikipedia_id': '1280667', 'title': 'Raised pavement marker', 'start_paragraph_id': 5, 'start_character': 0, 'end_paragraph_id': 5, 'end_character': 519, 'bleu_score': 0.9757530668325981, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 801701383777018398}, 'section': 'Section::::Reflective raised pavement markers.\n'}]}]