The visibility of symbolic highway signs can be increased among drivers of all ages.

@article{Kline1993TheVO,
  title={The visibility of symbolic highway signs can be increased among drivers of all ages.},
  author={Donald W. Kline and Philippe Fuchs},
  journal={Human factors},
  year={1993},
  volume={35 1},
  pages={25-34}
}
Visibility and comprehension of standard text, standard symbolic, and improved symbolic highway signs were compared among young, middle-aged, and elderly observers. The average distance at which standard symbolic signs could be identified was about two times that of text signs for all three age groups. The visibility distances of the improved symbolic signs, which were designed using an optical blur (i.e., low-pass) approach in order to avoid higher spatial frequencies, exceeded those of both… CONTINUE READING

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