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MindTap Engineering for Garber/Hoel's Traffic and Highway Engineering, 5th Edition, [Instant Access], 1 term (6 months)
5th Edition
ISBN: 9781305581159
Author: Nicholas J. Garber; Lester A. Hoel
Publisher: Cengage Learning US
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Question
Chapter 15, Problem 3P
To determine
(a)
Minimum design speed.
To determine
(b)
Recommended lane width.
To determine
(c)
Preferable shoulder width.
To determine
(d)
Maximum desirable grade.
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A rural collector highway is to be constructed in an area of rolling terrain where the ADT is 950 veh/day. For this situation, determine the following design values:
a. Minimum design speed
b. Desirable lane width and shoulder width
c. Maximum desirable grade
3. A developer has applied for a construction permit for a building at the southeast corner of an
intersection. The intersection is controlled with a stop sign on the minor road. The four-lane
major road in the east-west direction has a design speed of 50 mph. The two-lane minor road
is controlled by a stop sign. Determine whether the permit should be approved for the
following conditions.
a. Design vehicle - Single-Unit truck
b. Approach grade = 4%
C. Maximum feasible distance of the building from the center of the nearest lane of the
four-lane road = 21 ft
d. Maximum feasible distance of the building from the center of the nearest lane of the
two-lane road = 15 ft
A 960-m segment of 5.4-km six lane
divided TWLTL multilane highway in a
suburban area is at a 1.5% grade. The
highway is in level terrain and lane widths
are 3-m. The peak-hour volume is 3500
veh/hr/In, PHF is 0.90, and there are 13%
trucks and 2% RVs. Determine the LOS for
the following:
(a) extended directional segments (b) 3%
upgrade(c) 4% downgrade
Chapter 15 Solutions
MindTap Engineering for Garber/Hoel's Traffic and Highway Engineering, 5th Edition, [Instant Access], 1 term (6 months)
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- A new section of Richmond Highway is being designed as a six-lane facility (three ineach direction) with a two-way left-turn lane. Determine the peak-hour LOS.Traffic data:• Directional design hourly volume = 3600 veh/h• PHF = 0.94• Assumed base free-flow speed = 55 mi/h (88 km/h)Geometric data:• Urban setting• Rolling terrain• Lane width = 11 ft (3.3 m)• Shoulder widths = 4 ft (1.2 m) (right side) and 1 ft (0.3 m) (left side)• Average access point spacing = 12 points per mile on each sidearrow_forwardA new basic freeway segment will have 3 lanes in each direction. The left and center lane each has a width of 12 ft while the width of the right lane is 13 ft. The left shoulder is 4 ft while the right shoulder is also 4 ft. There are 2 interchanges within 6 miles (3 miles upstream and 3 miles down stream).The site has level terrain, the design speed is 80 mph the hourly design volume is 5250 veh/h, which includes 9.0% trucks and buses. The peak hour factor is 0.870. Calculate FHV, VP, FFS, LOS Show all workarrow_forwardA 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.arrow_forward
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