{
  "level1": "1",
  "level2": "1.1",
  "level3": "1.1.1",
  "pic_name": "....",
  "pic_path": "..../...png",
  "pre_dec_file": ".../...json",
  "gt_json_file": "",
  "is_longtail": "True/False",
  "Sup_description": "........",
  "lt_ele": "Dangerous goods vehicle/pedestrian/.....",
  "acc_factors": "cars passing ahead/Can be bypassed/.....",
  "COT":".......",
  "post_dec": "Reverse evacuation/Stay still/Detour beyond/......",
  "is_transfer2p": "Yes/No"
}