Policy on Geometric Design of Highways and Streets 2004 by Aashto
English | January 1, 2004 | ISBN: 1560512636 | 896 pages | PDF | 207 MB
English | January 1, 2004 | ISBN: 1560512636 | 896 pages | PDF | 207 MB
Drivers use many of their senses to gather information. Most information is received visually by drivers from their view of the roadway alignment, markings, and signs. However, drivers also detect changes in vehicle handling through instinct. They do so, for example, by feeling road surface texture through vibrations in the steering wheel and hearing emergency vehicle sirens.
Throughout the driving task, drivers perform several functions almost simultaneously. They look at information sources, make numerous decisions, and perform necessary control actions. Sources of information (some needed, others not) compete for their attention. Needed information should be in the driver’s field of view, available when and where needed, available in a usable form, and capable of capturing the driver’s attention.
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