car safety

1. Car Safety: Design & technology
Unit-2
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2. • Visibility - Maximum distance at which the driver can see and
identify prominent objects around the vehicle
• Blind spot - An area around the vehicle that cannot be
directly observed by the driver while at the controls, under
existing circumstances
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3. Forward visibility
• Front-end blind spots are influenced by the following
design criteria
• Distance between the driver and the pillar
• Thickness of the pillar
• The angle of the pillar in a vertical plane side view
• The angle of the pillar in a vertical plane front view
• the form of the pillar straight or arc-form
• Angle of the windshield
• Height of the driver in relation to the dashboard
• Speed of the opposite car
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4. Other Factors
• Height of driver
• Dashboard reflection
• A- pillar
• Light through roof reflection
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5. Blind spot
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6. Entrance door visibility
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7. Headlights
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8. The Vision Test
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• The eye test evaluates:
a. Acuity (how clearly you see).
b. Peripheral vision (how far you can see to either side while
looking straight ahead).
c. Depth and color perception

9. Tips for better visibility
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• Check your windshield washer fluid frequently to insure
adequate supply
• Periodically check your wipers and replace the blades if they
are split, leave streaks or skip
• Keep your headlamps clean and in good repair – road grime
can reduce visibility
• Wash your mirrors, windshield and windows regularly, both
outside and inside
• Adjust side mirrors out to reflect more of the road and as little
of the vehicle as possible
• Reduce the brightness of the instrument panel – many people
set this overly bright, which forces their eyes to overcome the
glare

10. Cont.
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• Adjust your seat so that you can see comfortably over the
wheel
• Glance frequently from the road ahead to your rear view
mirror, side mirror, and instrument panel when driving
• Avoid driving at night or in bad weather if you have difficulty
seeing in low-light situations

11. If you wear eyeglasses or sunglasses
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• Make sure they are clean
• Be sure to keep your prescription up to date
• Wear the proper glasses for day and night driving
• Be mindful when using tinted lenses – especially if your
windshield is tinted
• Tinted lenses of any kind can reduce visibility at night – never
wear them for night driving
• Choose eyeglass or sunglass frames with narrow side (temple)
pieces. Wide temple pieces may block or distract your
peripheral vision