Traffic and Highway Engineering
5th Edition
ISBN: 9781305156241
Author: Garber, Nicholas J.
Publisher: Cengage Learning
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Chapter 10, Problem 10P
To determine
The pedestrian LOS for bicyclists.
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Traffic and Highway Engineering
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- A two-lane minor street crosses a four-lane major street, with traffic conditions of volumes for each eight hours of an average day (both directions on major street) is 450 veh/h and the volume minor-street approach (one direction only) is 96 veh/h. With pedestrian volume of 198 ped/hr during (two hours in the morning and two hours in the afternoon) and the nearest traffic signal is located 250 ft from this location. The intersection is warranted for: Select one: O a.A traffic signal for warrant 4 O b. Not warranted since the nearest intersection is too close O C.A traffic signal for 70% of the condition of warrant 1 O d. Nonearrow_forward3. 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 ftarrow_forwardOne street segment has parking stalls on both sides. Estimate the minimum segment length from the street corner if the city engineer tries to provide 75 parking stalls within the segment using AASHTO typical street parallel parking guidelines with the longest typical stall length.arrow_forward
- A six-lane multilane highway (three lanes in each direction) has 10-ft lanes with 5-ft shoulders on the right side. There are 10 access points per mile and the posted speed limit is 50 mph. The median is TWLTL. Estimate the free flow speed.arrow_forward(a) A six-lane freeway (three lanes in each direction) has regular weekday users and currently operates at maximum LOS C conditions. The lanes are 11 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 rollingterrain with 10% large trucks and buses (no recreational vehicles), and the peak-hour factor is 0.90. Determine the hourly volume for these conditions.arrow_forwardQUESTION 1 A four-lane urban freeway segment has a peak demand volume of 3,500 vehicles per hour for the two eastbound lanes. The PHF is 0.95 and there are no trucks, buses or RVs because the freeway is classified as a parkway and such vehicles are prohibited. The segment has 12 ft lanes, no lateral obstructions, 3 ramps within the influence area, and meanders through some beautiful rolling terrain. Assuming the road will be used by commuters and those familiar with the road, what is the flow rate (pcphpl)? Provide your answer to the nearest integer.arrow_forward
- Determine the saturation flow rate (in veh/h) for a left-turn lane that operates in a permitted-only mode, under the following conditions. Opposing demand flow rate = 1,100 veh/h Lane width 11.5 ft Heavy vehicles = 4% of the traffic stream Approach grade -6% No on-street parking No bus stops Bicycle and pedestrian traffic conflicting with this lane group is negligible: Intersection is not in a central business district veh/harrow_forwardA new section of Richmond Highway is being designed as a six-lane facility (three in each direction) with a two-way left-turn lane. Determine the peak-hour LOS. (Assume commuter traffic, 5% trucks, and no RVs.) Traffic data: demand volume = 3,120 veh/h PHF = 0.95 assumed base free-flow speed = 55 mi/h Geometric data: urban setting rolling terrain lane width = 11 ft shoulder widths = 4 ft (right side) and 1 ft (left side) average access point spacing = 12 points per mile on each side LOS A LOS B LOS C LOS D LOS E LOS Farrow_forwardProblem 2. Consider a freeway section with three lanes in each direction and with a length of 1.25mi (2km) and a +5% grade. In this freeway, the directional peak-hour volume is 3,800 veh/h, from which 76 are trucks and 152 are transit buses. The maximum 15-min volume within the hour of analysis is 1,055 vehicles. The lane widths are 12 ft (3.6m), and shoulder widths are 10 ft (3.1m). There are 2 exit ramps and 1 entrance ramp in the 3 miles in the upstream section and 1 exit ramp and 2 entrance ramp in the 3 miles in the downstream section (consider the same ramp density if using international (km) units). All transit buses will be removed from traffic since the transit service will be replaced by a commuter rail service. However, by removing buses, new additional passage car demand is expected. It is estimated that for each removed bus, 7 new passenger cars will be added to the original traffic volume of 3,800 veh/h. Question: Determine the change in speed and traffic density before…arrow_forward
- A four-lane freeway with the following characteristics: ten foot travel lanes lateral obstructions at 0 feet at the roadside total ramp density is 4.5 ramps/mile rolling terrain The roadway has a current peak demand volume of 3500 veh/h. The peak hour factor is 0.95 and there are no trucks, buses, or RVs in the traffic stream because the roadway is classified as a parkway and such vehicles are prohibited. At what level of service will the freeway operate during its peak period of demand?arrow_forwardA four-lane urban freeway segment has a peak demand volume of 3,500 vehicles per hour for the two eastbound lanes. The PHF is 0.95 and there are no trucks, buses or RVs because the freeway is classified as a parkway and such vehicles are prohibited. The segment has 12 ft lanes, no lateral obstructions, 3 ramps within the influence area, and meanders through some beautiful rolling terrain. Assuming the road will be used by commuters and those familiar with the road, what is the flow rate (pcphpl)? Provide your answer to the nearest integer.arrow_forwardA freeway is to be designed to provide LOS C for the following conditions: design hourly volume of 5600 veh/h; PHF: 0.92; trucks: 6%; free flow speed: 70 mi/h; no lateral obstructions;rolling terrain; total ramp density of 0.75 ramps per mile.Determine: whether eight (four in each direction) 12 ft lanesare enough to provide LOS C.arrow_forward
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