Traffic and Highway Engineering - With Mindtap
5th Edition
ISBN: 9781305360990
Author: Garber
Publisher: CENGAGE L
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Question
Chapter 4, Problem 20P
To determine
The turnover, duration, capacity, peak demand & its time of occurrence and occupancy of the parking lot and the parking accumulation curve.
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Data collected at a parking lot indicate that a total of 300 cars park between 8 a.m. and 5 p.m. 5% of these cars are parked for an average of 2 hr, 20% for an average of 3 hr, 10% for an average of 4 hr, and the remaining cars are parked for an average of 9 hr. (a) Determine the space-hours of demand at the lot. (b) If 10% of the parking bays are vacant on average (between 8 a.m. and 5 p.m.) at the parking lot, determine the number of parking bays in the parking lot. Assume an efficiency factor of 0.90. (c) The owner of the parking lot is planning an expansion of her lot to provide adequate demand for the following 10 years. If she has estimated that parking demand for all categories will increase by 3% a year, determine the number of additional parking bays that will be required.
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Vehicles begin to arrive at a toll booth at 5 vehicles per minute from 7 AM to 8 AM. The booth opens at 7:15 AM and services at a rate of 3 vehicles per minute until 7:45 AM. From 7:45 AM until 8 AM the service rate is 6 vehicles per minute. Assuming D/D/1 queuing,
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Chapter 4 Solutions
Traffic and Highway Engineering - With Mindtap
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- TASK 1: Question 1 From an in-out survey conducted for a parking area consisting of 150 bays, the initial count was found to be XY. The table below gives the results of the survey. The number of vehicles coming in and out of the parking lot for a time interval of 5 minutes is shown in the table. Find the accumulation, total parking load, average occupancy and efficiency of the parking lot. Note: XY= 100- last two digits of your student number. For example, if your student number is 190786, then XY= 100-86= 14. Time In 05 10 15 20 25 30 35 40 45 50 55 60 40 44 14 30 16 20 Out 36 22 15 19 28 14 18 14 18 30 28 15 12 22 21 19 20 25arrow_forward8. In a volume study of a street in Kasoa, the following data was collected on a Sunday. The data was collected for a 24 hour period at hourly intervals as shown in the table below. Knowing that the traffic volume for this week is 10,000 vehicles/week (a) Calculate the hourly expansion factor (HEF) (b) Calculate the Daily expansion factor (DEF) for Sunday (c) Find the peak hour and peak hour volume (d) Calculate the maximum 15-min flow rate, If PHF=0.82 Time No. of Veh HEF Time No. of Veh HEF 12:00-01:00 am 105 01:00-02:00 am | 110 02:00-03:00 am 95 03:00-04:00 am 90 04:00-05:00 am 75 05:00-06:00 am 75 06:00-07:00 am 80 07:00-08:00 am 70 08:00-09:00 am 60 12:00-01:00 am 10 01:00-02:00 am 02:00-03:00 am 03:00-04:00 am 04:00-05:00 am 8 5 7 15 25 05:00-06:00 am 06:00-07:00 am 07:00-08:00 am 08:00-09:00 am 09:00-10:00 am 10:00-11:00 am 40 110 130 90 09:00-10:00 am 40 10:00-11:00 am 30 11:00-12:00 pm | 25 95 11:00-12:00 pm 110arrow_forwardScheduled maintenance will close two of the four westbound lanes of a freeway during one weekday for the period from 9:00 AM to 4:00 PM. The demand on the two lanes are as follows: Time Demand, vph 9:00-10:00 AM 4000 10:00-11:00 AM 3500 11:00-12:00 NN 2500 12:00-1:00 PM 2000 1:00-2:00 PM 2000 2:00-3:00 PM 2000 3:00-4:00 PM 2000 If the estimated capacity of the 4 lanes with 2 lanes open is 2960 vph, a. compute the time when maximum queue occurs. 11:00 AM b. compute the maximum queue formed. 1580 vehicles c. compute the maximum length of queue if the average length of cars is equal to 5 meters. 1975 m Show all necessary diagrams and solutions.arrow_forward
- At a toll booth, vehicles arrive with a mean arrival rate of 2 vehicles per minute and they are processed with a mean rate of 6 vehicles per minute. Determine the average length of queue, the average time spent in the toll booth, and the average waiting time if the vehicles arrive according to a Poisson process and they are processed at a uniform deterministic rate. they are processed at an exponential rate. a) b)arrow_forwardVehicles begin arriving at Allen fieldhouse at 6:30 PM, at a constant rate of 4 per minute. One gate opens at 7:00 PM and processes cars at a rate of 5 vehicles per minute. At 7:10 PM, a second gate opens, doubling the rate at which cars are processed. What is the average vehicle delay? Assume D/D/1 queuing.arrow_forwardMatch the following facility with the LOS criteria used to evaluate the performance on the facility Freeway basic segment A. Density Multilane highway automobiles B. Bike LOS score C. Percent time spent following Freeway weaving segment D. Number of crashes Signalized Intersection Bicycles on multilane highways E. Average speed F. Average delay per vehiclearrow_forward
- Please solve the question article (Traffic engineer)arrow_forwardAt the exit of a toll gate with a single booth, vehicles arrive at random at a rate of 20 vehicles per minute. The service has an average rate of 22 vehicles per minute. However, due to variable toll fees, the service is also random with an average rate of 22 vehicles per minute. Estimate average length of queue formed at the toll gate Group of answer choices 7.09 8.09 9.09 6.09arrow_forwardVehicles begin to arrive to a parking lot at 7:00 AM at a rate of 2000 veh/hour, but the demand reduces to 1000 veh/hour at 7:30 AM and continues at that rate. The ticketing booth to enter the parking lot can only serve the vehicles at 1000 veh/hour until 7:15 AM, after which the service rate increases to 2000 veh/hour. Assuming D/D/1 queuing, draw a queuing diagram for this situation. Find: a) the time at which the queue clears, b) the total delay, c) the longest queue length, and d) wait time of the 500th and 2000th vehicles to arrive to the parking lot (assuming FIFO conditions)?arrow_forward
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