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Research Report — JVIB Extract

Since Research Reports do not have abstracts, we have provided an extract of the beginning of the text.

Extract: Although individuals who are blind have used a stick or a cane for their independent travel since the early years of human history, designs for modern long canes did not appear until World War II, when the systematic long cane techniques were developed by Hoover (1962). Ergonomic factors, such as the length of the cane, may affect how well a cane user can detect the presence of obstacles and changes in surface elevation, including drop-offs. Reliable drop-off detection with a long cane, an essential component of surface preview (Blasch, La Grow, & De l'Aune, 1996), is critical for the safety of travelers who are blind who use canes, since missing drop-offs or other changes in elevation in the walking surface may cause them to fall or accidentally stumble into the collision path of approaching vehicles.

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