A vehicle moving at a speed of 50 mph is slowing traffic on a two-lane highway. What passing sight distance is necessary, in order for a passing maneuver to be carried out safely? Calculate the passing sight distance. In your calculations, assume that the following variables have the values given: Passing vehicle driver's perception/reaction time = 2.5 sec Passing vehicle's acceleration rate = 1.47 mph/sec Initial speed of passing vehicle = 50 mph Passing speed of passing vehicle = 60 mph Speed of slow vehicle = 50 mph Speed of opposing vehicle = 60 mph Length of passing vehicle = 22 ft Length of slow vehicle = 22 ft Clearance distance between passing and slow vehicles at lane change = 20 ft Clearance distance between passing and slow vehicles at lane re-entry = 20 ft Clearance distance between passing and opposing vehicles at lane re-entry = 250 ft
A vehicle moving at a speed of 50 mph is slowing traffic on a two-lane highway. What passing sight
distance is necessary, in order for a passing maneuver to be carried out safely? Calculate the passing
sight distance. In your calculations, assume that the following variables have the values given:
Passing vehicle driver's perception/reaction time = 2.5 sec
Passing vehicle's acceleration rate = 1.47 mph/sec
Initial speed of passing vehicle = 50 mph
Passing speed of passing vehicle = 60 mph
Speed of slow vehicle = 50 mph
Speed of opposing vehicle = 60 mph
Length of passing vehicle = 22 ft
Length of slow vehicle = 22 ft
Clearance distance between passing and slow vehicles at lane change = 20 ft
Clearance distance between passing and slow vehicles at lane re-entry = 20 ft
Clearance distance between passing and opposing vehicles at lane re-entry = 250 ft
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