Explore driver response to lead vehicles under various conditions, focusing on rear-end collisions, following distances, and reaction times. This quiz assesses understanding of factors influencing driver behavior and safety measures, based on multiple research studies.
True
False
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Flashing, presence and strobe lights had no influence on REACTION time
Reaction time decreases by 10% due to flashing lights
Flashing lights improve performance when eccentricity equals zero
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0.003 radians per second is farther away from the lead vehicle than 0.006 radians per second
0.003 involves real-life drivers and 0.006 does not
0.003 refers to radians per second and 0.006 refers to degrees per second
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1.16 sec
2.11 sec
4.11 sec
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40 %
75 %
90 %
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True
False
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True
False
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200 ft (61 m) (+/-6 ft., 2 m)
242 ft (74 m) (+/-6 ft., 2 m)
303 ft (92 m) (+/-6 ft., 2 m)
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True
False
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True
False
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Pitch of the lead vehicle
Immediate change in closing speed
Brake lights going on
All of the above
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Lead vehicles are relatively intense stimuli
Large objects seem to move slower
Large objects seem to move faster
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1.0 second or less
1.25 to 1.5 seconds behind
2.0 seconds behind or more
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The lead vehicle stops suddenly
The relative velocity (closing speed) is greater than 30 mph
The approaching driver is following the lead vehicle and the lead vehicle stops
A lead vehicle is stopped at the apex (peak) of a curve
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Faster response time of 0.3 seconds
Slower response time of 0.3 seconds
Faster response time of 0.1 seconds
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0.98 sec
2.11 sec
3.52 sec
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Slow down
Speed up
Anticipate passing and maybe look toward a mirror
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102 ft (31 m) (+/-6 ft., 2 m)
148 ft (45 m) (+/-6 ft., 2 m)
216 ft (66 m)(+/-6 ft., 2 m)
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0.002 to 0.003 r/s
0.004 to 0.006 r/s
0.006 to 0.009 r/s
PRT increases as headway increases on straight roads
Headway is the distance in seconds that an approaching vehicle is behind a LV
PRT increases by 0.39 seconds for every 1 second headway on straight roads
When there is changing topography, intersections, or other cues to determine the closing speed with the LV, headway has the most influence
Farm tractors do not typically present a good pattern at night
Farm tractors typically travel much slower than other traffic
Drivers follow too close
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3 sec
5 sec
7 sec
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Quiz Review Timeline (Updated): Mar 18, 2023 +
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