Traffic and Highway Engineering - With Mindtap
5th Edition
ISBN: 9781305360990
Author: Garber
Publisher: CENGAGE L
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 12, Problem 23P
To determine
The estimation of expected demand increase if there is a
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Describe the principles of transportation system performance measurement and evaluation.
12) List and define the 4 steps of the "4-step travel demand model" used in transportation planning.
Problem 1. Consider the network below. The numbers are the link travel times. Links are
bi-directional.
1
6.
4
1
1
a
3
1
2
1
1
1
2
(a) Notice that the network above is non-planar, i.e. links can cross each other without being
connected. Give an example of a non-planar road network.
(b) Give the minimum cost label at each node starting from s.
(c) Find the shortest path from s to t.
Chapter 12 Solutions
Traffic and Highway Engineering - With Mindtap
Ch. 12 - Prob. 1PCh. 12 - Prob. 2PCh. 12 - Prob. 3PCh. 12 - Prob. 4PCh. 12 - Prob. 5PCh. 12 - Prob. 6PCh. 12 - Prob. 7PCh. 12 - Prob. 8PCh. 12 - Prob. 9PCh. 12 - Given a table with production and attraction data,...
Ch. 12 - Given a table with production and attraction data,...Ch. 12 - Prob. 12PCh. 12 - Prob. 13PCh. 12 - Prob. 14PCh. 12 - Prob. 15PCh. 12 - Prob. 16PCh. 12 - Prob. 17PCh. 12 - Prob. 18PCh. 12 - Prob. 19PCh. 12 - Prob. 20PCh. 12 - Prob. 21PCh. 12 - Prob. 22PCh. 12 - Prob. 23PCh. 12 - Prob. 24PCh. 12 - Prob. 25PCh. 12 - Prob. 26PCh. 12 - Prob. 27PCh. 12 - Prob. 28P
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.Similar questions
- A highway department is considering three alternative routes between two locations. The rate of interest is 8%.arrow_forward1. A total of 5,000 person-trips are made between a commercial district and a residential area during the PM peak hour. Commuters have two modes available, including private automobile and a light- rail transit system. The following utility function was calibrated using data from the study area from users of these two modes: U 3D -0. 50T1 — 0. 50T, — 2. 00С Data summarizing the operational characteristics and costs associated with each mode are provided in the following table. Private Light-Rail Parameter Automobile Transit = in-vehicle travel time (min.) 10 T1 T2 = excess time (min.) C = out-of-pocket cost (dollars) 15 5 10 5.00 2.00 Determine how many trips will be made by each travel mode based on these characteristics.arrow_forward8.18 Two routes connect an origin and a destination. Routes 1 and 2 have performance functions t₁ = 2 + x₁ and t₂ = 1 + x2, where the 's are in minutes and the x's are in thousands of vehicles per hour. The travel times on the routes are known to be in user equilibrium. If an observation for route 1 finds that the gaps between 30% of the vehicles are less than 6 seconds, estimate the volume and average travel times for the two routes. (Hint: Assume a Poisson distribution of vehicle arrivals, as discussed in Chapter 5.)arrow_forward
- Automobile Transit 0 10 Model Parameter X₁, waiting time (min.) X₂, travel time (min.) X₁. parking time (min.) 20 35 5 0 X4, out-of-pocket cost (cents) 225 100 A. calibration constant -0.33 -0.27 B. After implementing service improvements to the mass transit, the mode split changed to 81.4% private automobile use and 18.6% mass transit use. Determine a value for the waiting time for the mass transit mode that reflects this shift in mode split.arrow_forwardDesign Hourly Volume (DHV) is the projected hourly volume that is used for design. This volume is taken as a percentage of choose one of the following the average annual traffic the average weekley traffic the average daily traffic none of the given choicesarrow_forwardPlease summarize Transportation Policy Analysis and Planning. Please explain its function.arrow_forward
- How may advances in computing power and data analytics improve transportation policy, practise, and study?arrow_forwardInclude the contents of Transportation Policy Analysis and Planning in your summary. Please offer further information and explain its purpose.arrow_forwardUsing the data on the table, determine the following using transit rule.arrow_forward
- hree routes connect an origin and a destination with performance functions: ?1=8+0.5?1; ?2=1+2?2; and ?3=3+0.75?3; with the x’s being the traffic volume expressed in thousands of vehicles per hour and t’s being the travel time expressed in minutes. If the peak hour traffic demand is 3400 vehicles, determine user equilibrium traffic flows. [Hint: Note that one of the paths will not be used under the equilibrium conditionarrow_forwardto no congestion on the road further downstream of the railway grade crossing. QUESTION 5: Consider trip distribution within 5 zones in an area. The total trip production from zone 1 is 1000. The travel times from zone 1 to zones 2, 3, 4 and 5 are 5, 10, 20, and 30 minutes, respectively. The trip attraction to zones 2, 3, 4 and 5 are 50, 200, 75, and 450, respectively. Assume that the number of trips produced from zone 1 to zones 2, 3, 4 and 5 is inversely proportional to the inter-zonal travel time. (a) Estimate the number of trips from zone 1 to zones 2, 3, 4 and 5 using the gravity model. (b) Assume that the future trip production from zone I will increase to 1,250 and the future trip attraction to zones 2, 3, 4 and 5 will increase to 100, 225, 100, and 600, respectively. Predict the number of trips from zone 1 to zones 2, 3, 4 and 5. The inter-zonal travel times remain the same. (c) Compare the number of trips from zone 1 to each destination zone between (a) and (b). Identify the…arrow_forwardA 24-km-long metro circle line has 15 stations. The line operates with an average operating speed of 30 km/h and a headway of 4 minutes. The average standing time at each station is 60 s. a. By how much should the average standing time be reduced to allow the transit agency to reduce the number of TUs by two while keeping the same operating schedule? b. Considering the original condition, what is the required increase in the operating speed to reduce the headway to 3.5 minutes? Consider the line operates under the conditions of part a. Due to improvement in the line operations, the operating speed can be increased by 4 km/h over the speed under part a. Assuming the headway remains the same, compute the new operating speed, cycle time and number of TUs. C.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Traffic and Highway EngineeringCivil EngineeringISBN:9781305156241Author:Garber, Nicholas J.Publisher:Cengage Learning
Traffic and Highway Engineering
Civil Engineering
ISBN:9781305156241
Author:Garber, Nicholas J.
Publisher:Cengage Learning