1 / 14

Human factors

Learn about how aging affects vision and the implications for driving safety. Explore the changes in visual factors such as contrast sensitivity and field of vision, as well as the impact on mental processing. Discover strategies that older adults use to compensate for these changes.

streater
Télécharger la présentation

Human factors

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Human factors Age and vision

  2. Age and vision 20 Year old vision 60 year old vision

  3. Population growth segment 75 year old - estimate, Grandpa hopes this is serious exaggeration!

  4. Lens opening with age and time of day Source: visual expert.com

  5. Contrast sensitivity _ increase need compared to 20 year old Visualexpert.com

  6. Additional Visual impacts • Glare • Color Blindness Greens must be 1.3 times as bright as red to be equally visible (general population) • Loss of field of vision • Motion perception • Mental processing

  7. Human factors and signing Mental Processing • Consider minds processing pattern in next slides

  8. Aoccdrnig to rscheearch at Cmabrigde Uinervtisy, it deosn't mttaer in waht oredr the ltteers in a wrod are, the olny iprmoetnt tihng is taht the frist and lsat ltteer be at the rghit pclae

  9. The rset can be a ttoal mses and you can sitll raed it wouthit aporbelm.Tihs is bcuseae the huamn mnid deos not raed ervey lteter by istlef,  but the wrod as a wlohe. Amzanig, huh?

  10. Human Factors notes • Short term memory may be for only 5 to 15 seconds. • Depends on: • (class provide suggestions

  11. Potential responses to question • Urgency of the message • Other messages to compete with the original message (information overload) • Original understanding of the message • Word versus symbol • Visual versus audio - (audio is longer)

  12. Recall presentation on Mnoady • What were the digits that you were asked to remember? (Those went into short term memory only - and maybe not that well.) • What was the concept or strategy used to help us remember the series of digits? My expectation: you will remember the strategy - where was that placed?

  13. Mental processing time Data scattered here, but we do know that elderly have more difficulty with: • Judging whether a rear-end collision will occur • Judging correct speed • Braking rapidly • Steering smoothly • Judging when to merge into traffic • Judging when to turn corners

  14. Good news Wisdom of age also means that the bulk of the elderly do make adjustments for their driving deficiencies. They • Adjust speeds • Choose time of day to minimize day / night problems • Travel at off-peak times and travel less • Avoid distractions (cell phones, partying passengers?) They are only somewhat over-represented by fatalities per population; it is in fatality per mile driven that peaks are most obvious.

More Related