Traffic and Highway Engineering
5th Edition
ISBN: 9781305156241
Author: Garber, Nicholas J.
Publisher: Cengage Learning
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Question
Chapter 4, Problem 12P
To determine
The different traffic count programs carried out in our state in detail and the data collected in each program.
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Students have asked these similar questions
Consider the following plot of cumulative arriving and departing vehicles at a freeway bottleneck location:
Vehicles
20,000
15,000
10,000
5,000
0
0
30 60 90 120 150 180 210 240 270 300 330 360
Time (mins)
Arrivals (vehs) Departures (vehs)
From this plot, determine the following:
A. What is the capacity of the bottleneck location? 9000
whole number, i.e. X000.)
B. What is the maximum size of the queue that develops? 3250
whole number, i.e. X000.)
C. What is the longest wait time that any vehicle experiences during the breakdown?
to the nearest whole number, i.e. XX.)
(Hint: Provide the answer as a numerical number only in units of vehicles per hour and rounded to the nearest thousand
(Hint: Provide the answer as a numerical number only in units of vehicles and rounded to the nearest thousand
(Hint: Provide the answer as a numerical number only in units of minutes and rounded
The following cross-classification data have been developed for a European city transportation
study area.
House Hold (HH) Autos/HH (%) Trip Rate/Auto
(%)
Income
Trips (%)
($)
High Med Low O1+2 0 1 +2 HBW HBO NHB
10,000 0 30 70 48 48 4 2.0 6.00 28.5 38
34
28
50 | 4 72| 24 2.5 7.5 30.0 38
2 53 45
20,000
30,000
40,000
50,000 50 50 00 19 81 7.5 12.0 39.0 20
50
34
28
10 70
20
4.0
9.0
33.0
35
34
31
20
75
5 1 32 57 5.5 10.5 36.0 27
35
38
37
60,000 70 30
43
40
0010 90 8.0 13.0 41.0 16
44
Develop the family of cross-classification curves and determine the number of trips produced (by
purpose) for traffic zone containing 1000 houses with an average household income of $30,000.
(Use high = 55,000; medium 25,000; low = 15,000.)
1. A simple road network (for Town X) shown below has two-way links. The travel time in minutes for zero
volume (free flow speed) is also shown. Using Dijkstra's algorithm,
a. What are the shortest paths from zone B to A, C, and D?
b. What are the corresponding travel times? Show the network with final permanent labels, and clearly
mark the links showing the minimum paths.
12
10
12
D
Chapter 4 Solutions
Traffic and Highway Engineering
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- QUESTION 6 There is no service flow rate for level of service F. O True O Falsearrow_forwardUsing the data on the table, determine the following using transit rule.arrow_forwardThe data in the table on the right were obtained from a survey. Apply the license plate matching method to estimate the average travel time.arrow_forward
- What role does traffic analysis and monitoring play specifically?arrow_forwardGiven the following transportation network and the production/attraction data in each zone. 3 min 3 3 min 4 min 3 min 4 min 2 min 4 min 2 7 min Production/Attraction Table Zone 1 2 3 4 5 Production 600 1000 500 Attraction 300 200 350 400 The number of trips that originates from Zone 3 and ends in Zone 1 is 13 88 29 None of the abovearrow_forwardGiven 1000 trips, how many trips should be assigned to route 4 using the constant assignment ratio? Route Time in hours 1 1 2 1.5 3 2 4 2.5 5 3arrow_forward
- Explain how the GPS technology could help with transportation data collection. Use transit vehicle location tracking as an example.arrow_forwardA simple road network shown below has two way links. The travel time in minutes for zero volumes is also shown. Using Dijkstras algorithm, determine the following: 1. Minimum path and minimum travel time from zone B to C. Show all necessary diagrams 2. Minimum path and minimum travel time from zone A to D. Show all necessary diagramsarrow_forwardInstructions. For the given data, provide the following. Complete Network Diagram highlighting the critical path and showing ES, LS, EF, LF Identify the paths, their duration and slack Provide the table showing ES, LS, EF, LF, TF, FF and remarks. Given: A, B, and C are starting activities D follows A while E follows C B, D and E precede J K and F cannot start until B, D and E are completed G follows C and precedes H and I • H and I cannot proceed until F is completed L follows K and precedes N J precedes P, M and S H, I, and P must be completed before Q can start Land M must be completed before N can start O follows N while R follows Q • R, O and S are ending activities Dummy activity x is provided after activity Iarrow_forward
- 5-4.. The following traffic count data were taken from a per- manent detector location on a major state highway. 1. 2. 3. 4. 5. Month No. of Total Total Total Weekdays Days in Monthly Weekday Volume in Month Month Volume (days) (days) (vehs) (vehs) 200,000 210,000 215,000 205,000 195,000 193,000 180,000 175,000 189,000 170,000 171,000 Jan 22 31 Feb 20 28 185,000 180,000: 172,000 168,000 160,000 150,000 -175,000 178,000 182,000 176,000 Mar 22 31 30 Apr May Jun 22 21 31 22 30 Jul 23 31 21 31 Aug Sep Oct 22 30 198,000 205,000 200,000 22 31 Nov 21 30 Dec 22 31 From this data, determine (a) the AADT, (b) the ADT for each month, (c) the AAWT, and (d) the AWT for each month. From this information, what can be dis- cerned about the character of the facility and the demand it serves?arrow_forwardMatch each item to a choice: It is a well known method to study the manner in which drivers move into a priority area where they must give way to other road users. Defined as the gap for which the number of accepted gaps shorter than it is equal to the number of rejected gaps longer than it It is a measure of the time between the rear bumper of the first vehicle and the front bumper of the second vehicle Two or more road users are about to occupy the same location at the same time, if their movements remain unchanged. It refers to the methods and measures used to prevent road users from being klled or seriously injured. The road user who took an evasive action first. It is the span between the mament the first traffic participant leaves the course of the second traffic participant and the second traffic porticipant enters the previous course of the first one. Defined at the moment when one of the road users start taking an evasive action It is defined as the time needed for a…arrow_forwardDefine the following terms and cite examples of how they are used: Average annual daily traffic (AADT) Average daily traffic (ADT) Vehicle-miles of travel (VMT) Peak hour volume (PHV) help me pls. Ill upvote thankyou :)arrow_forward
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