1. Answer the following two parts: a. Derive an expression for amber time for signalized intersection considering safe vehicle movement. b. A tall building is located 50 ft from the centerline of the right lane of a local road and 60 ft from the centerline of the right lane of an intersecting lane. If the maximum speed at the intersecting road is 50 mph, what should be the speed limit on the local road such that the minimum sight distance is provided to avoid any imminent collisions? Assume level grades. Table 1: Suggested lengths of Sight-Triangle for Right-turn cases Design Speed (mi/h) Length of Leg (ft)
1. Answer the following two parts: a. Derive an expression for amber time for signalized intersection considering safe vehicle movement. b. A tall building is located 50 ft from the centerline of the right lane of a local road and 60 ft from the centerline of the right lane of an intersecting lane. If the maximum speed at the intersecting road is 50 mph, what should be the speed limit on the local road such that the minimum sight distance is provided to avoid any imminent collisions? Assume level grades. Table 1: Suggested lengths of Sight-Triangle for Right-turn cases Design Speed (mi/h) Length of Leg (ft)
Traffic and Highway Engineering
5th Edition
ISBN:9781305156241
Author:Garber, Nicholas J.
Publisher:Garber, Nicholas J.
Chapter7: Intersection Design
Section: Chapter Questions
Problem 27P
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Transcribed Image Text:1. Answer the following two parts:
a. Derive an expression for amber time for signalized intersection considering safe
vehicle movement.
b.
A tall building is located 50 ft from the centerline of the right lane of a local road
and 60 ft from the centerline of the right lane of an intersecting lane. If the
maximum speed at the intersecting road is 50 mph, what should be the speed limit
on the local road such that the minimum sight distance is provided to avoid any
imminent collisions? Assume level grades.
Table 1: Suggested lengths of Sight-Triangle for Right-turn cases
Design Speed (mi/h)
15
20
25
30
35
40
45
50
55
60
65
70
75
80
Length of Leg (ft)
70
90
115
140
165
195
220
245
285
325
365
405
445
485
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