Develop a signal timing for the intersection shown below. Assume values as necessary (provide justification on the assumptions). Level terrain Driver reaction time (t) = 1.0 s Vehicle deceleration rate (a) = 10 ft/s² Length of typical vehicle = 18 ft 375 One way PHF = 0.90 1,200 Target v/c = 0.95 Low pedestrian activity Average approach speeds: 35 mi/h WB 60 ft 40 mi/h NB Crosswalk widths = 10 ft Crosswalk setback = 2 ft 2,105 Walking speed = 4.0 ft/s NB grade = 3% WB grade = -1% l1 = e = 2.0 s 300 One way N 55 ft
Develop a signal timing for the intersection shown below. Assume values as necessary (provide justification on the assumptions). Level terrain Driver reaction time (t) = 1.0 s Vehicle deceleration rate (a) = 10 ft/s² Length of typical vehicle = 18 ft 375 One way PHF = 0.90 1,200 Target v/c = 0.95 Low pedestrian activity Average approach speeds: 35 mi/h WB 60 ft 40 mi/h NB Crosswalk widths = 10 ft Crosswalk setback = 2 ft 2,105 Walking speed = 4.0 ft/s NB grade = 3% WB grade = -1% l1 = e = 2.0 s 300 One way N 55 ft
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:Develop a signal timing for the intersection shown below. Assume values as necessary (provide
justification on the assumptions).
Level terrain
Driver reaction time (t) = 1.0 s
Vehicle deceleration rate (a) = 10 ft/s²
Length of typical vehicle = 18 ft
375
One way
PHF = 0.90
1,200
Target v/c = 0.95
Low pedestrian activity
Average approach speeds:
35 mi/h WB
60 ft
40 mi/h NB
Crosswalk widths = 10 ft
Crosswalk setback = 2 ft
2,105
Walking speed = 4.0 ft/s
NB grade = 3%
WB grade = -1%
l1 = e = 2.0 s
300
One way
N
55 ft
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