Traffic and Highway Engineering - With Mindtap
5th Edition
ISBN: 9781305360990
Author: Garber
Publisher: CENGAGE L
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Question
Chapter 15, Problem 1P
To determine
(a)
Suitable design speed for the rural collector highway.
Expert Solution
Answer to Problem 1P
Explanation of Solution
Given information:
In mountains terrain is designed to carry volume of
For a rural collector highway located in mountains terrain is designed to carry a design volume
From the table the design speed for
To determine
(b)
Lane and usable shoulder lengths for the rural collector highway.
Expert Solution
Answer to Problem 1P
Lane=
Shoulder =
Explanation of Solution
Given information:
In mountains terrain is designed to carry volume of
For a rural collector highway located in mountains terrain is designed to carry a design volume
From the figure
Width of shoulder is total
To determine
(c)
Maximum desirable grade for the rural collector highway.
Expert Solution
Answer to Problem 1P
Maximum desirable grade=
Explanation of Solution
Given information:
In mountains terrain is designed to carry volume of
From the Table
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Students have asked these similar questions
A two-lane rural highway carries a peak hour volume of 465 (vph) and has the following characteristics:
Roadway: 60mph design; 11 foot lanes, 2 foot shoulders; rolling terrain; 60% no-passing zones; length = 3 miles.
Traffic: 70/30 directional split; 4% trucks; 2 percent recreational vehicles; 1 percent buses; PHF = 0.95
a) What Level of Service will the highway operate under during peak periods?
b) What is the capacity of the highway? Explain why this is less than 2,800 (vph)?
A long segment of suburban freeway is to be designed on level terrain. The level segment, however, is followed by a 4.5% grade, 2.0 miles in length. If the DDHV is 2,500 vehicles per hour with 15% trucks (standard mix), how many lanes will be needed on the (A.) Upgrade, (B.) Downgrade, (C.) Level terrain segment to provide for level of service C? Lane widths and lateral clearances may be assumed to be 12 feet and 6 feet, respectively. Ramp density is expected to be 1.0 ramps per mile. The PHF is 0.92. Good weather, no incidents, no work zones, and regular users of the facility may be assumed.
A four-lane freeway (2 lanes in each direction) has regular weekday users and currently operates at maximum LOS C conditions. The lanes are 12 ft wide, the right-side shoulder is 4 ft wide, and there are two ramps within three miles upstream of the segment midpoint and one ramp within three miles downstream of the segment midpoint. The highway is on rolling terrain with 10% large trucks and buses (no recreational vehicles), and the peak-hour factor is 0.90. Determine the D in pc/mi/h and vp in pc/hr/ln.
Chapter 15 Solutions
Traffic and Highway Engineering - With Mindtap
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Similar questions
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