@misc{indiciae30db232a9be3,
  title = {Drivers and road signs.},
  author = {G Johansson and F Backlund},
  year = {1970},
  doi = {10.1080/00140137008931202},
  url = {https://pubmed.ncbi.nlm.nih.gov/5498705/},
  note = {Source identifier: 5498705}
}