stationary work zones have ___________ unlike mobile work zones.
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Module 5 driving Flashcards
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Module 5 driving
1.5 4 Reviews
2 seconds between cars
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Under 35 miles per hour
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3 seconds between cars
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36-45 miles per hour
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Textbook solutions for this set
Digital Electronics 9th Edition William Kleitz 440 explanations
Introduction to Logic Design
3rd Edition Alan B. Marcovitz 414 explanations
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Terms in this set (114)
2 seconds between cars
Under 35 miles per hour
3 seconds between cars
36-45 miles per hour
4 seconds between cars
46-70 miles per hour
half second reaction time
The driving manual says that hand response time for a human driver, unlike our superhero at right, is close to a half second. Foot response time is longer, normally three-quarters of a second. This does not take into account any delay in perception time as a result of the driver being tired, on medication, distracted, etc.
sight and vision
Sight or vision is the most important sense used in driving. Vision is the primary way that you gain information about the traffic scene, and good vision is crucial to risk management. It is so important, that the DMV has standards for your vision: a vision screening test is included when obtaining your drivers license to ensure you meet the standards. The Virginia vision standard is 20/40 or better vision in one or both eyes, and 100 degrees, or better, horizontal vision in one or both eyes.
focus vision
Used to read and identify distinct objects, it covers about three percent of your visual field. It is measured by using an eye chart to determine visual acuity. It is the basis for visual lead, targeting, and searching tasks in driving, each of which we'll examine in this module.
Central vision
Used to judge depth and position, it is measured by testing object identification and depth perception fields. It is used for determining standard visual references in driving, relative position in space and time, and movement into space/time.
Peripheral vision
Used to detect color and motion changes, it is strongly affected by fatigue, drugs, and speed. It often gives the driver an initial warning of a changing or closed space area.
target
fixed object that appears at the end and in the center of the path you intend to drive
targeting
maintaining vehicle position by selecting a visual target well ahead of the vehicle
advantages of targeting
There are several advantages yo-
a. allows driver to visualize the space they intend to occurpy
b. helps driver start learning to use a searching process
c. gets driver to look far ahead, rather than close to vehicle
d. allows driver to plan ahead
e. increases steering precision and reduces steering reversals
f. develops skid avoidance skills
visual lead
area targeted 20 to 30 seconds from the front of the vehicle. keeping eye focus centered in the path of travel at an interval 20 to 30 seconds away from the vehicle is critical to gaining as much information as possible from the driving scene. Good targeting sets up good sigh lines for referencing and good peripheral fields for seeing changes and identifying alternate paths of travel
line of sight
ability to see the center of your path of travel from the vehicle to your targeting area. this can be blocked by a curve, hill, bush, building, vehicle, etc. the driver's ability to have an unrestricted line of sight is the visual basis for speed and steering adjustments. an interrupted line of sight means changes in speed and position are necessary for re-establishing a clear line of sight to your path of travel and targeting area
path of travel
combination of targeting area, line of sight, standard visual references, and guided experiences. learning about path of travel and alternate paths of travel is critical for driver performance
target area
driving environment to the left and right of where the target is located. searching the target area for driving related information is more important than trying to identify a specific target. identification of a specific target is only necessary while learning what a target is and how to identify one. target area searching requires identification of the condition of the target area as open or closed, red light or green, stopped traffic or moving, curve or hill crest, left curve or right curve, to give your a clear picture of what to expect ahead of the vehicle's targeting path. after knowing what the condition is in your target area, you then should assess your 12-15 second range to see what zone changes can or do affect your targeting path. make assessments of your other zones to see what your options are. then select the best lane position and get the best speed control in order to achieve the lowest degree of risk en route to the target area, as you get within 4-6 seconds of a zone change, you re-evaluate it to insure best control. closer to the target area, you re-evaluate the condition of the target area and begin assessing your next target area and the zone changes that you weilll encounter en route. this process of searching from one target area to the next target area is repeated continually
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Bulletin of the Atomic Scientists
The Bulletin of the Atomic Scientists is the premier public resource on scientific and technological developments that impact global security. Founded by Manhattan Project Scientists, the Bulletin's iconic "Doomsday Clock" stimulates solutions for a safer world.
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Bulletin of the Atomic Scientists
May 1961 88 sayfa 17. cilt,5. no. ISSN 0096-3402
Yayınlayan: Educational Foundation for Nuclear Science, Inc.
The Bulletin of the Atomic Scientists is the premier public resource on scientific and technological developments that impact global security. Founded by Manhattan Project Scientists, the Bulletin's iconic "Doomsday Clock" stimulates solutions for a safer world.
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